From 1ab26517556aed6e64e4523f1c2d074a304c64e2 Mon Sep 17 00:00:00 2001
From: Alex Pott <alex.a.pott@googlemail.com>
Date: Sun, 1 Jun 2014 15:53:43 -0500
Subject: [PATCH] Issue #2183231 by tstoeckler, plach, jessebeach, fago,
 Berdir, xjm, mauzeh: Make ContentEntityDatabaseStorage generate static
 database schemas for content entities.

---
 .../Entity/ContentEntityDatabaseStorage.php   | 422 ++++++--
 core/lib/Drupal/Core/Entity/Entity.php        |  18 +-
 .../Drupal/Core/Entity/EntityStorageBase.php  |   1 +
 .../Drupal/Core/Entity/Query/Sql/Tables.php   |  50 +-
 .../Schema/ContentEntitySchemaHandler.php     | 518 ++++++++++
 .../Schema/EntitySchemaHandlerInterface.php   |  14 +
 .../Schema/EntitySchemaProviderInterface.php  |  23 +
 .../Core/Entity/Sql/DefaultTableMapping.php   | 180 ++++
 .../Entity/Sql/SqlEntityStorageInterface.php  |  26 +
 .../Core/Entity/Sql/TableMappingInterface.php |  73 ++
 .../Drupal/Core/Extension/ModuleHandler.php   |  33 +
 .../Field/FieldType/EntityReferenceItem.php   |   5 +-
 .../Plugin/Field/FieldType/IntegerItem.php    |   6 +
 .../Field/Plugin/Field/FieldType/UriItem.php  |   3 +-
 core/modules/aggregator/aggregator.install    | 176 ----
 core/modules/aggregator/src/Entity/Feed.php   |   7 +-
 core/modules/aggregator/src/Entity/Item.php   |   5 +-
 core/modules/aggregator/src/FeedStorage.php   |  23 +
 core/modules/aggregator/src/ItemStorage.php   |  23 +
 .../aggregator/src/Tests/FeedParserTest.php   |   2 +-
 .../src/Tests/Views/IntegrationTest.php       |   5 +-
 .../block/custom_block/custom_block.install   | 125 ---
 .../custom_block/CustomBlockStorage.php       |  34 +
 .../custom_block/src/Entity/CustomBlock.php   |   3 +-
 core/modules/comment/comment.install          | 146 ---
 core/modules/comment/src/CommentStorage.php   |  46 +
 core/modules/comment/src/Entity/Comment.php   |   3 +-
 .../CommentDefaultFormatterCacheTagsTest.php  |   3 +-
 .../src/Tests/CommentValidationTest.php       |   3 +-
 .../src/Tests/ConfigImportRecreateTest.php    |   4 +-
 .../ConfigImportRenameValidationTest.php      |   5 +-
 .../editor/src/Tests/EditorFileUsageTest.php  |   6 +-
 .../entity/src/Tests/EntityDisplayTest.php    |   2 +-
 .../src/Tests/EntityReferenceFieldTest.php    |   2 +-
 .../src/Tests/EntityReferenceItemTest.php     |   3 +-
 .../field/src/Tests/FieldAttachOtherTest.php  |   2 +-
 .../src/Tests/FieldAttachStorageTest.php      |   2 +-
 .../field/src/Tests/FieldUnitTestBase.php     |   4 +-
 .../field/src/Tests/TranslationWebTest.php    |   4 +-
 core/modules/file/file.install                |  99 --
 core/modules/file/src/Entity/File.php         |   7 +-
 core/modules/file/src/FileStorage.php         |  31 +-
 .../modules/file/src/FileStorageInterface.php |   4 +-
 core/modules/file/src/Tests/FileItemTest.php  |   4 +-
 .../src/Tests/FileManagedUnitTestBase.php     |   5 +-
 .../src/Tests/RetrieveTemporaryFilesTest.php  |  41 +-
 core/modules/file/src/Tests/SpaceUsedTest.php |  44 +-
 .../src/Tests/FilterDefaultConfigTest.php     |   2 +-
 .../src/Tests/Views/ForumIntegrationTest.php  |   2 +-
 core/modules/hal/src/Tests/EntityTest.php     |   8 +-
 .../hal/src/Tests/NormalizerTestBase.php      |   4 +-
 .../modules/image/src/Tests/ImageItemTest.php |   3 +-
 .../src/Tests/d6/MigrateBookTest.php          |   1 +
 .../src/Tests/d6/MigrateFieldInstanceTest.php |   1 +
 .../src/Tests/d6/MigrateTaxonomyTermTest.php  |   7 +-
 core/modules/node/node.install                | 305 ------
 core/modules/node/node.module                 |   5 +-
 core/modules/node/src/Entity/Node.php         |  55 +-
 core/modules/node/src/NodeForm.php            |  11 +-
 core/modules/node/src/NodeStorage.php         |  50 +-
 .../src/Tests/Condition/NodeConditionTest.php |   2 +-
 .../src/Tests/Config/NodeImportCreateTest.php |   2 +-
 .../node/src/Tests/NodeFormButtonsTest.php    |   5 +-
 .../node/src/Tests/NodeLastChangedTest.php    |   7 +-
 .../node/src/Tests/NodeTokenReplaceTest.php   |   2 +-
 .../node/src/Tests/NodeValidationTest.php     |   2 +-
 .../quickedit/src/Tests/QuickEditTestBase.php |   2 +-
 .../rdf/src/Tests/CommentAttributesTest.php   |   2 +-
 .../Field/TaxonomyTermReferenceRdfaTest.php   |   2 +-
 .../Plugin/rest/resource/EntityResource.php   |   7 +
 core/modules/rest/src/Tests/UpdateTest.php    |   1 -
 .../src/Tests/EntitySerializationTest.php     |  12 +-
 .../src/Tests/NormalizerTestBase.php          |   4 +-
 core/modules/shortcut/shortcut.install        |  90 --
 core/modules/shortcut/src/Entity/Shortcut.php |  11 +-
 .../shortcut/src/Entity/ShortcutSet.php       |  16 +-
 .../modules/simpletest/src/KernelTestBase.php |  35 +
 .../src/Tests/KernelTestBaseTest.php          |  20 +-
 .../src/Tests/Action/ActionUnitTest.php       |   2 +-
 .../src/Tests/Common/WriteRecordTest.php      |  19 +-
 .../system/src/Tests/Entity/EntityApiTest.php |  14 +-
 .../src/Tests/Entity/EntityCrudHookTest.php   |  16 +-
 .../src/Tests/Entity/EntityFieldTest.php      |  18 +-
 .../Tests/Entity/EntityLanguageTestBase.php   |  14 +-
 .../Entity/EntityQueryRelationshipTest.php    |   2 +-
 .../src/Tests/Entity/EntityQueryTest.php      |   4 +-
 .../src/Tests/Entity/EntityUUIDTest.php       |  13 +-
 .../src/Tests/Entity/EntityUnitTestBase.php   |   6 +-
 .../src/Tests/Entity/EntityValidationTest.php |  15 +-
 .../src/Tests/Entity/FieldAccessTest.php      |   3 +-
 .../src/Tests/Entity/FieldSqlStorageTest.php  |   3 +-
 .../src/Tests/TypedData/TypedDataTest.php     |   2 +-
 .../database_test/database_test.install       |  29 +
 .../modules/entity_test/entity_test.install   | 386 +------
 .../src/Entity/EntityTestBaseFieldDisplay.php |   1 -
 .../src/Entity/EntityTestLabelCallback.php    |   1 -
 .../entity_test/src/Entity/EntityTestMul.php  |  13 -
 .../src/Entity/EntityTestMulRev.php           |  19 -
 core/modules/taxonomy/src/Entity/Term.php     |   2 +
 core/modules/taxonomy/src/TermStorage.php     | 100 ++
 .../Tests/TaxonomyTermReferenceItemTest.php   |   3 +-
 .../src/Tests/TermTranslationUITest.php       |  10 +-
 .../taxonomy/src/Tests/TermValidationTest.php |   2 +-
 core/modules/taxonomy/taxonomy.install        | 164 ---
 .../src/Tests/Formatter/TextPlainUnitTest.php |   2 +-
 .../src/Tests/TextWithSummaryItemTest.php     |   2 +-
 core/modules/user/src/AccountForm.php         |   9 +-
 core/modules/user/src/Entity/User.php         |  11 +-
 core/modules/user/src/Tests/UserAdminTest.php |  25 +-
 .../user/src/Tests/UserInstallTest.php        |   5 +-
 .../user/src/Tests/UserValidationTest.php     |   2 +-
 .../user/src/Tests/Views/UserUnitTestBase.php |   2 +-
 core/modules/user/src/UserStorage.php         |  62 +-
 .../views.view.test_filter_permission.yml     |  15 +-
 core/modules/user/user.info.yml               |   2 +
 core/modules/user/user.install                | 153 ---
 core/modules/views/src/Entity/View.php        |   8 +-
 .../views/src/Plugin/views/query/Sql.php      |   1 -
 .../Tests/Entity/RowEntityRenderersTest.php   |   5 +-
 .../views/src/Tests/Handler/AreaTextTest.php  |   2 +-
 .../src/Tests/Handler/HandlerAliasTest.php    |   2 +-
 .../Tests/Plugin/RelationshipJoinTestBase.php |   2 +-
 .../views/src/Tests/Plugin/RowEntityTest.php  |   2 +-
 .../views/src/Tests/QueryGroupByTest.php      |   2 +-
 .../views/src/Tests/ViewExecutableTest.php    |   8 +-
 .../ContentEntityDatabaseStorageTest.php      | 957 +++++++++++++++++-
 .../Schema/ContentEntitySchemaHandlerTest.php | 770 ++++++++++++++
 .../Entity/Sql/DefaultTableMappingTest.php    | 268 +++++
 128 files changed, 4013 insertions(+), 2086 deletions(-)
 create mode 100644 core/lib/Drupal/Core/Entity/Schema/ContentEntitySchemaHandler.php
 create mode 100644 core/lib/Drupal/Core/Entity/Schema/EntitySchemaHandlerInterface.php
 create mode 100644 core/lib/Drupal/Core/Entity/Schema/EntitySchemaProviderInterface.php
 create mode 100644 core/lib/Drupal/Core/Entity/Sql/DefaultTableMapping.php
 create mode 100644 core/lib/Drupal/Core/Entity/Sql/SqlEntityStorageInterface.php
 create mode 100644 core/lib/Drupal/Core/Entity/Sql/TableMappingInterface.php
 delete mode 100644 core/modules/block/custom_block/custom_block.install
 create mode 100644 core/modules/block/custom_block/lib/Drupal/custom_block/CustomBlockStorage.php
 delete mode 100644 core/modules/taxonomy/taxonomy.install
 create mode 100644 core/tests/Drupal/Tests/Core/Entity/Schema/ContentEntitySchemaHandlerTest.php
 create mode 100644 core/tests/Drupal/Tests/Core/Entity/Sql/DefaultTableMappingTest.php

diff --git a/core/lib/Drupal/Core/Entity/ContentEntityDatabaseStorage.php b/core/lib/Drupal/Core/Entity/ContentEntityDatabaseStorage.php
index 221489420025..b21958b752cf 100644
--- a/core/lib/Drupal/Core/Entity/ContentEntityDatabaseStorage.php
+++ b/core/lib/Drupal/Core/Entity/ContentEntityDatabaseStorage.php
@@ -7,8 +7,14 @@
 
 namespace Drupal\Core\Entity;
 
+use Drupal\Component\Utility\String;
 use Drupal\Core\Database\Connection;
+use Drupal\Core\Database\Database;
 use Drupal\Core\Entity\Query\QueryInterface;
+use Drupal\Core\Entity\Schema\ContentEntitySchemaHandler;
+use Drupal\Core\Entity\Sql\DefaultTableMapping;
+use Drupal\Core\Entity\Sql\SqlEntityStorageInterface;
+use Drupal\Core\Field\FieldDefinitionInterface;
 use Drupal\Core\Field\FieldStorageDefinitionInterface;
 use Drupal\Core\Language\Language;
 use Drupal\field\FieldConfigUpdateForbiddenException;
@@ -24,8 +30,28 @@
  *
  * This class can be used as-is by most simple entity types. Entity types
  * requiring special handling can extend the class.
+ *
+ * The class uses \Drupal\Core\Entity\Schema\ContentEntitySchemaHandler
+ * internally in order to automatically generate the database schema based on
+ * the defined base fields. Entity types can override
+ * ContentEntityDatabaseStorage::getSchema() to customize the generated
+ * schema; e.g., to add additional indexes.
  */
-class ContentEntityDatabaseStorage extends ContentEntityStorageBase {
+class ContentEntityDatabaseStorage extends ContentEntityStorageBase implements SqlEntityStorageInterface {
+
+  /**
+   * The storage field definitions for this entity type.
+   *
+   * @var \Drupal\Core\Field\FieldStorageDefinitionInterface[]
+   */
+  protected $fieldStorageDefinitions;
+
+  /**
+   * The mapping of field columns to SQL tables.
+   *
+   * @var \Drupal\Core\Entity\Sql\TableMappingInterface
+   */
+  protected $tableMapping;
 
   /**
    * Name of entity's revision database table field, if it supports revisions.
@@ -36,6 +62,20 @@ class ContentEntityDatabaseStorage extends ContentEntityStorageBase {
    */
   protected $revisionKey = FALSE;
 
+  /**
+   * The entity langcode key.
+   *
+   * @var string|bool
+   */
+  protected $langcodeKey = FALSE;
+
+  /**
+   * The base table of the entity.
+   *
+   * @var string
+   */
+  protected $baseTable;
+
   /**
    * The table that stores revisions, if the entity supports revisions.
    *
@@ -71,6 +111,13 @@ class ContentEntityDatabaseStorage extends ContentEntityStorageBase {
    */
   protected $entityManager;
 
+  /**
+   * The entity schema handler.
+   *
+   * @var \Drupal\Core\Entity\Schema\EntitySchemaHandlerInterface
+   */
+  protected $schemaHandler;
+
   /**
    * {@inheritdoc}
    */
@@ -97,24 +144,193 @@ public function __construct(EntityTypeInterface $entity_type, Connection $databa
 
     $this->database = $database;
     $this->entityManager = $entity_manager;
+    $this->fieldStorageDefinitions = $entity_manager->getBaseFieldDefinitions($entity_type->id());
+
+    // @todo Remove table names from the entity type definition in
+    //   https://drupal.org/node/2232465
+    $this->baseTable = $this->entityType->getBaseTable() ?: $this->entityTypeId;
+
+    $revisionable = $this->entityType->isRevisionable();
+    if ($revisionable) {
+      $this->revisionKey = $this->entityType->getKey('revision') ?: 'revision_id';
+      $this->revisionTable = $this->entityType->getRevisionTable() ?: $this->entityTypeId . '_revision';
+    }
+    // @todo Remove the data table check once all entity types are using
+    // entity query and we have a views data controller. See:
+    // - https://drupal.org/node/2068325
+    // - https://drupal.org/node/1740492
+    $translatable = $this->entityType->isTranslatable() && $this->entityType->getDataTable();
+    if ($translatable) {
+      $this->dataTable = $this->entityType->getDataTable() ?: $this->entityTypeId . '_field_data';
+      $this->langcodeKey = $this->entityType->getKey('langcode') ?: 'langcode';
+      $this->defaultLangcodeKey = $this->entityType->getKey('default_langcode') ?: 'default_langcode';
+    }
+    if ($revisionable && $translatable) {
+      $this->revisionDataTable = $this->entityType->getRevisionDataTable() ?: $this->entityTypeId . '_field_revision';
+    }
+  }
+
+  /**
+   * Returns the base table name.
+   *
+   * @return string
+   *   The table name.
+   */
+  public function getBaseTable() {
+    return $this->baseTable;
+  }
+
+  /**
+   * Returns the revision table name.
+   *
+   * @return string|false
+   *   The table name or FALSE if it is not available.
+   */
+  public function getRevisionTable() {
+    return $this->revisionTable;
+  }
+
+  /**
+   * Returns the data table name.
+   *
+   * @return string|false
+   *   The table name or FALSE if it is not available.
+   */
+  public function getDataTable() {
+    return $this->dataTable;
+  }
 
-    // Check if the entity type supports UUIDs.
-    $this->uuidKey = $this->entityType->getKey('uuid');
+  /**
+   * Returns the revision data table name.
+   *
+   * @return string|false
+   *   The table name or FALSE if it is not available.
+   */
+  public function getRevisionDataTable() {
+    return $this->revisionDataTable;
+  }
 
-    if ($this->entityType->isRevisionable()) {
-      $this->revisionKey = $this->entityType->getKey('revision');
-      $this->revisionTable = $this->entityType->getRevisionTable();
+  /**
+   * {@inheritdoc}
+   */
+  public function getSchema() {
+    return $this->schemaHandler()->getSchema();
+  }
+
+  /**
+   * Gets the schema handler for this storage controller.
+   *
+   * @return \Drupal\Core\Entity\Schema\ContentEntitySchemaHandler
+   *   The schema handler.
+   */
+  protected function schemaHandler() {
+    if (!isset($this->schemaHandler)) {
+      $this->schemaHandler = new ContentEntitySchemaHandler($this->entityManager, $this->entityType, $this);
     }
+    return $this->schemaHandler;
+  }
 
-    // Check if the entity type has a dedicated table for fields.
-    if ($data_table = $this->entityType->getDataTable()) {
-      $this->dataTable = $data_table;
-      // Entity types having both revision and translation support should always
-      // define a revision data table.
-      if ($this->revisionTable && $revision_data_table = $this->entityType->getRevisionDataTable()) {
-        $this->revisionDataTable = $revision_data_table;
+  /**
+   * {@inheritdoc}
+   */
+  public function getTableMapping() {
+    if (!isset($this->tableMapping)) {
+
+      $definitions = array_filter($this->fieldStorageDefinitions, function (FieldDefinitionInterface $definition) {
+        // @todo Remove the check for FieldDefinitionInterface::isMultiple() when
+        //   multiple-value base fields are supported in
+        //   https://drupal.org/node/2248977.
+        return !$definition->isComputed() && !$definition->hasCustomStorage() && !$definition->isMultiple();
+      });
+      $this->tableMapping = new DefaultTableMapping($definitions);
+
+      $key_fields = array_values(array_filter(array($this->idKey, $this->revisionKey, $this->bundleKey, $this->uuidKey, $this->langcodeKey)));
+      $all_fields = array_keys($definitions);
+      $revisionable_fields = array_keys(array_filter($definitions, function (FieldStorageDefinitionInterface $definition) {
+        return $definition->isRevisionable();
+      }));
+      // Make sure the key fields come first in the list of fields.
+      $all_fields = array_merge($key_fields, array_diff($all_fields, $key_fields));
+
+      // Nodes have all three of these fields, while custom blocks only have
+      // log.
+      // @todo Provide automatic definitions for revision metadata fields in
+      //   https://drupal.org/node/2248983.
+      // @todo Rename 'log' to 'revision_log' in
+      //   https://drupal.org/node/2248991.
+      $revision_metadata_fields = array_intersect(array('revision_timestamp', 'revision_uid', 'log'), $all_fields);
+
+      $revisionable = $this->entityType->isRevisionable();
+      // @todo Remove the data table check once all entity types are using
+      // entity query and we have a views data controller. See:
+      // - https://drupal.org/node/2068325
+      // - https://drupal.org/node/1740492
+      $translatable = $this->entityType->getDataTable() && $this->entityType->isTranslatable();
+      if (!$revisionable && !$translatable) {
+        // The base layout stores all the base field values in the base table.
+        $this->tableMapping->setFieldNames($this->baseTable, $all_fields);
+      }
+      elseif ($revisionable && !$translatable) {
+        // The revisionable layout stores all the base field values in the base
+        // table, except for revision metadata fields. Revisionable fields
+        // denormalized in the base table but also stored in the revision table
+        // together with the entity ID and the revision ID as identifiers.
+        $this->tableMapping->setFieldNames($this->baseTable, array_diff($all_fields, $revision_metadata_fields));
+        $revision_key_fields = array($this->idKey, $this->revisionKey);
+        $this->tableMapping->setFieldNames($this->revisionTable, array_merge($revision_key_fields, $revisionable_fields));
+      }
+      elseif (!$revisionable && $translatable) {
+        // Multilingual layouts store key field values in the base table. The
+        // other base field values are stored in the data table, no matter
+        // whether they are translatable or not. The data table holds also a
+        // denormalized copy of the bundle field value to allow for more
+        // performant queries. This means that only the UUID is not stored on
+        // the data table.
+        $this->tableMapping
+          ->setFieldNames($this->baseTable, $key_fields)
+          ->setFieldNames($this->dataTable, array_values(array_diff($all_fields, array($this->uuidKey))))
+          // Add the denormalized 'default_langcode' field to the mapping. Its
+          // value is identical to the query expression
+          // "base_table.langcode = data_table.langcode"
+          ->setExtraColumns($this->dataTable, array('default_langcode'));
+      }
+      elseif ($revisionable && $translatable) {
+        // The revisionable multilingual layout stores key field values in the
+        // base table, except for language, which is stored in the revision
+        // table along with revision metadata. The revision data table holds
+        // data field values for all the revisionable fields and the data table
+        // holds the data field values for all non-revisionable fields. The data
+        // field values of revisionable fields are denormalized in the data
+        // table, as well.
+        $this->tableMapping->setFieldNames($this->baseTable, array_values(array_diff($key_fields, array($this->langcodeKey))));
+
+        // Like in the multilingual, non-revisionable case the UUID is not
+        // in the data table. Additionally, do not store revision metadata
+        // fields in the data table.
+        $data_fields = array_values(array_diff($all_fields, array($this->uuidKey), $revision_metadata_fields));
+        $this->tableMapping
+          ->setFieldNames($this->dataTable, $data_fields)
+          // Add the denormalized 'default_langcode' field to the mapping. Its
+          // value is identical to the query expression
+          // "base_langcode = data_table.langcode" where "base_langcode" is
+          // the language code of the default revision.
+          ->setExtraColumns($this->dataTable, array('default_langcode'));
+
+        $revision_base_fields = array_merge(array($this->idKey, $this->revisionKey, $this->langcodeKey), $revision_metadata_fields);
+        $this->tableMapping->setFieldNames($this->revisionTable, $revision_base_fields);
+
+        $revision_data_key_fields = array($this->idKey, $this->revisionKey, $this->langcodeKey);
+        $revision_data_fields = array_diff($revisionable_fields, $revision_metadata_fields);
+        $this->tableMapping
+          ->setFieldNames($this->revisionDataTable, array_merge($revision_data_key_fields, $revision_data_fields))
+          // Add the denormalized 'default_langcode' field to the mapping. Its
+          // value is identical to the query expression
+          // "revision_table.langcode = data_table.langcode".
+          ->setExtraColumns($this->revisionDataTable, array('default_langcode'));
       }
     }
+
+    return $this->tableMapping;
   }
 
   /**
@@ -215,13 +431,14 @@ protected function attachPropertyData(array &$entities) {
       }
 
       $data = $query->execute();
-      $field_definitions = \Drupal::entityManager()->getBaseFieldDefinitions($this->entityTypeId);
+
+      $table_mapping = $this->getTableMapping();
       $translations = array();
       if ($this->revisionDataTable) {
-        $data_column_names = array_flip(array_diff(drupal_schema_fields_sql($this->entityType->getRevisionDataTable()), drupal_schema_fields_sql($this->entityType->getBaseTable())));
+        $data_fields = array_diff_key($table_mapping->getFieldNames($this->revisionDataTable), $table_mapping->getFieldNames($this->baseTable));
       }
       else {
-        $data_column_names = array_flip(drupal_schema_fields_sql($this->entityType->getDataTable()));
+        $data_fields = $table_mapping->getFieldNames($this->dataTable);
       }
 
       foreach ($data as $values) {
@@ -232,23 +449,16 @@ protected function attachPropertyData(array &$entities) {
         $langcode = empty($values['default_langcode']) ? $values['langcode'] : Language::LANGCODE_DEFAULT;
         $translations[$id][$langcode] = TRUE;
 
-        foreach (array_keys($field_definitions) as $field_name) {
-          // Handle columns named directly after the field.
-          if (isset($data_column_names[$field_name])) {
-            $entities[$id][$field_name][$langcode] = $values[$field_name];
+
+        foreach ($data_fields as $field_name) {
+          $columns = $table_mapping->getColumnNames($field_name);
+          // Do not key single-column fields by property name.
+          if (count($columns) == 1) {
+            $entities[$id][$field_name][$langcode] = $values[reset($columns)];
           }
           else {
-            // @todo Change this logic to be based on a mapping of field
-            // definition properties (translatability, revisionability) in
-            // https://drupal.org/node/2144631.
-            foreach ($data_column_names as $data_column_name) {
-              // Handle columns named [field_name]__[column_name], for which we
-              // need to look through all column names from the table that start
-              // with the name of the field.
-              if (($data_field_name = strstr($data_column_name, '__', TRUE)) && $data_field_name === $field_name) {
-                $property_name = substr($data_column_name, strpos($data_column_name, '__') + 2);
-                $entities[$id][$field_name][$langcode][$property_name] = $values[$data_column_name];
-              }
+            foreach ($columns as $property_name => $column_name) {
+              $entities[$id][$field_name][$langcode][$property_name] = $values[$column_name];
             }
           }
         }
@@ -352,11 +562,12 @@ protected function buildQuery($ids, $revision_id = FALSE) {
     }
 
     // Add fields from the {entity} table.
-    $entity_fields = drupal_schema_fields_sql($this->entityType->getBaseTable());
+    $table_mapping = $this->getTableMapping();
+    $entity_fields = $table_mapping->getAllColumns($this->baseTable);
 
     if ($this->revisionTable) {
       // Add all fields from the {entity_revision} table.
-      $entity_revision_fields = drupal_schema_fields_sql($this->entityType->getRevisionTable());
+      $entity_revision_fields = $table_mapping->getAllColumns($this->revisionTable);
       $entity_revision_fields = array_combine($entity_revision_fields, $entity_revision_fields);
       // The ID field is provided by entity, so remove it.
       unset($entity_revision_fields[$this->idKey]);
@@ -477,7 +688,12 @@ protected function doSave($id, EntityInterface $entity) {
     $is_new = $entity->isNew();
     if (!$is_new) {
       if ($entity->isDefaultRevision()) {
-        $return = drupal_write_record($this->entityType->getBaseTable(), $record, $this->idKey);
+        $this->database
+          ->update($this->baseTable)
+          ->fields((array) $record)
+          ->condition($this->idKey, $record->{$this->idKey})
+          ->execute();
+        $return = SAVED_UPDATED;
       }
       else {
         // @todo, should a different value be returned when saving an entity
@@ -485,13 +701,13 @@ protected function doSave($id, EntityInterface $entity) {
         $return = FALSE;
       }
       if ($this->revisionTable) {
-        $record->{$this->revisionKey} = $this->saveRevision($entity);
+        $entity->{$this->revisionKey}->value = $this->saveRevision($entity);
       }
       if ($this->dataTable) {
         $this->savePropertyData($entity);
       }
       if ($this->revisionDataTable) {
-        $this->savePropertyData($entity, 'revision_data_table');
+        $this->savePropertyData($entity, $this->revisionDataTable);
       }
       if ($this->revisionTable) {
         $entity->setNewRevision(FALSE);
@@ -502,7 +718,17 @@ protected function doSave($id, EntityInterface $entity) {
       // Ensure the entity is still seen as new after assigning it an id,
       // while storing its data.
       $entity->enforceIsNew();
-      $return = drupal_write_record($this->entityType->getBaseTable(), $record);
+      $insert_id = $this->database
+        ->insert($this->baseTable, array('return' => Database::RETURN_INSERT_ID))
+        ->fields((array) $record)
+        ->execute();
+      // Even if this is a new entity the ID key might have been set, in which
+      // case we should not override the provided ID. An empty value for the
+      // ID is interpreted as NULL and thus overridden.
+      if (empty($record->{$this->idKey})) {
+        $record->{$this->idKey} = $insert_id;
+      }
+      $return = SAVED_NEW;
       $entity->{$this->idKey}->value = (string) $record->{$this->idKey};
       if ($this->revisionTable) {
         $entity->setNewRevision();
@@ -512,8 +738,9 @@ protected function doSave($id, EntityInterface $entity) {
         $this->savePropertyData($entity);
       }
       if ($this->revisionDataTable) {
-        $this->savePropertyData($entity, 'revision_data_table');
+        $this->savePropertyData($entity, $this->revisionDataTable);
       }
+
       $entity->enforceIsNew(FALSE);
       if ($this->revisionTable) {
         $entity->setNewRevision(FALSE);
@@ -543,13 +770,14 @@ protected function has($id, EntityInterface $entity) {
    *
    * @param \Drupal\Core\Entity\EntityInterface $entity
    *   The entity object.
-   * @param string $table_key
-   *   (optional) The entity key identifying the target table. Defaults to
-   *   'data_table'.
+   * @param string $table_name
+   *   (optional) The table name to save to. Defaults to the data table.
    */
-  protected function savePropertyData(EntityInterface $entity, $table_key = 'data_table') {
-    $table_name = $this->entityType->get($table_key);
-    $revision = $table_key != 'data_table';
+  protected function savePropertyData(EntityInterface $entity, $table_name = NULL) {
+    if (!isset($table_name)) {
+      $table_name = $this->dataTable;
+    }
+    $revision = $table_name != $this->dataTable;
 
     if (!$revision || !$entity->isNewRevision()) {
       $key = $revision ? $this->revisionKey : $this->idKey;
@@ -564,7 +792,7 @@ protected function savePropertyData(EntityInterface $entity, $table_key = 'data_
 
     foreach ($entity->getTranslationLanguages() as $langcode => $language) {
       $translation = $entity->getTranslation($langcode);
-      $record = $this->mapToDataStorageRecord($translation, $table_key);
+      $record = $this->mapToDataStorageRecord($translation, $table_name);
       $values = (array) $record;
       $query
         ->fields(array_keys($values))
@@ -589,63 +817,43 @@ protected function invokeHook($hook, EntityInterface $entity) {
    *
    * @param \Drupal\Core\Entity\ContentEntityInterface $entity
    *   The entity object.
-   * @param string $table_key
-   *   (optional) The entity key identifying the target table. Defaults to
-   *   'base_table'.
+   * @param string $table_name
+   *   (optional) The table name to map records to. Defaults to the base table.
    *
    * @return \stdClass
    *   The record to store.
    */
-  protected function mapToStorageRecord(ContentEntityInterface $entity, $table_key = 'base_table') {
+  protected function mapToStorageRecord(ContentEntityInterface $entity, $table_name = NULL) {
+    if (!isset($table_name)) {
+      $table_name = $this->baseTable;
+    }
+
     $record = new \stdClass();
-    $values = array();
-    $schema = drupal_get_schema($this->entityType->get($table_key));
-    $is_new = $entity->isNew();
+    $table_mapping = $this->getTableMapping();
+    foreach ($table_mapping->getFieldNames($table_name) as $field_name) {
 
-    $multi_column_fields = array();
-    foreach (drupal_schema_fields_sql($this->entityType->get($table_key)) as $name) {
-      // Check for fields which store data in multiple columns and process them
-      // separately.
-      if ($field = strstr($name, '__', TRUE)) {
-        $multi_column_fields[$field] = TRUE;
-        continue;
+      if (empty($this->fieldStorageDefinitions[$field_name])) {
+        throw new EntityStorageException(String::format('Table mapping contains invalid field %field.', array('%field' => $field_name)));
       }
-      $values[$name] = NULL;
-      if ($entity->hasField($name)) {
-        // Only the first field item is stored.
-        $field_item = $entity->get($name)->first();
-        $main_property = $entity->getFieldDefinition($name)->getMainPropertyName();
-        if ($main_property && isset($field_item->$main_property)) {
-          // If the field has a main property, store the value of that.
-          $values[$name] = $field_item->$main_property;
+      $definition = $this->fieldStorageDefinitions[$field_name];
+      $columns = $table_mapping->getColumnNames($field_name);
+
+      foreach ($columns as $column_name => $schema_name) {
+        // If there is no main property and only a single column, get all
+        // properties from the first field item and assume that they will be
+        // stored serialized.
+        // @todo Give field types more control over this behavior in
+        //   https://drupal.org/node/2232427.
+        if (!$definition->getMainPropertyName() && count($columns) == 1) {
+          $value = $entity->$field_name->first()->getValue();
         }
-        elseif (!$main_property) {
-          // If there is no main property, get all properties from the first
-          // field item and assume that they will be stored serialized.
-          // @todo Give field types more control over this behavior in
-          //   https://drupal.org/node/2232427.
-          $values[$name] = $field_item->getValue();
+        else {
+          $value = isset($entity->$field_name->$column_name) ? $entity->$field_name->$column_name : NULL;
         }
-      }
-    }
-
-    // Handle fields that store multiple properties and match each property name
-    // to its schema column name.
-    foreach (array_keys($multi_column_fields) as $field_name) {
-      $field_items = $entity->get($field_name);
-      $field_value = $field_items->getValue();
-      foreach (array_keys($field_items->getFieldDefinition()->getColumns()) as $field_schema_column) {
-        if (isset($schema['fields'][$field_name . '__' . $field_schema_column])) {
-          $values[$field_name . '__' . $field_schema_column] = isset($field_value[0][$field_schema_column]) ? $field_value[0][$field_schema_column] : NULL;
+        if (!empty($definition->getSchema()['columns'][$column_name]['serialize'])) {
+          $value = serialize($value);
         }
-      }
-    }
-
-    foreach ($values as $field_name => $value) {
-      // If we are creating a new entity, we must not populate the record with
-      // NULL values otherwise defaults would not be applied.
-      if (isset($value) || !$is_new) {
-        $record->$field_name = drupal_schema_get_field_value($schema['fields'][$field_name], $value);
+        $record->$schema_name = drupal_schema_get_field_value($definition->getSchema()['columns'][$column_name], $value);
       }
     }
 
@@ -657,15 +865,17 @@ protected function mapToStorageRecord(ContentEntityInterface $entity, $table_key
    *
    * @param \Drupal\Core\Entity\EntityInterface $entity
    *   The entity object.
-   * @param string $table_key
-   *   (optional) The entity key identifying the target table. Defaults to
-   *   'data_table'.
+   * @param string $table_name
+   *   (optional) The table name to map records to. Defaults to the data table.
    *
    * @return \stdClass
    *   The record to store.
    */
-  protected function mapToDataStorageRecord(EntityInterface $entity, $table_key = 'data_table') {
-    $record = $this->mapToStorageRecord($entity, $table_key);
+  protected function mapToDataStorageRecord(EntityInterface $entity, $table_name = NULL) {
+    if (!isset($table_name)) {
+      $table_name = $this->dataTable;
+    }
+    $record = $this->mapToStorageRecord($entity, $table_name);
     $record->langcode = $entity->language()->id;
     $record->default_langcode = intval($record->langcode == $entity->getUntranslated()->language()->id);
     return $record;
@@ -681,12 +891,20 @@ protected function mapToDataStorageRecord(EntityInterface $entity, $table_key =
    *   The revision id.
    */
   protected function saveRevision(EntityInterface $entity) {
-    $record = $this->mapToStorageRecord($entity, 'revision_table');
+    $record = $this->mapToStorageRecord($entity, $this->revisionTable);
 
     $entity->preSaveRevision($this, $record);
 
     if ($entity->isNewRevision()) {
-      drupal_write_record($this->revisionTable, $record);
+      $insert_id = $this->database
+        ->insert($this->revisionTable, array('return' => Database::RETURN_INSERT_ID))
+        ->fields((array) $record)
+        ->execute();
+      // Even if this is a new revsision, the revision ID key might have been
+      // set in which case we should not override the provided revision ID.
+      if (!isset($record->{$this->revisionKey})) {
+        $record->{$this->revisionKey} = $insert_id;
+      }
       if ($entity->isDefaultRevision()) {
         $this->database->update($this->entityType->getBaseTable())
           ->fields(array($this->revisionKey => $record->{$this->revisionKey}))
@@ -695,7 +913,11 @@ protected function saveRevision(EntityInterface $entity) {
       }
     }
     else {
-      drupal_write_record($this->revisionTable, $record, $this->revisionKey);
+      $this->database
+        ->update($this->revisionTable)
+        ->fields((array) $record)
+        ->condition($this->revisionKey, $record->{$this->revisionKey})
+        ->execute();
     }
 
     // Make sure to update the new revision key for the entity.
diff --git a/core/lib/Drupal/Core/Entity/Entity.php b/core/lib/Drupal/Core/Entity/Entity.php
index 557ddf3c4a8b..cc7b3168da8c 100644
--- a/core/lib/Drupal/Core/Entity/Entity.php
+++ b/core/lib/Drupal/Core/Entity/Entity.php
@@ -555,14 +555,18 @@ protected static function invalidateTagsOnDelete(array $entities) {
    * Acts on entities of which this entity is a bundle entity type.
    */
   protected function onUpdateBundleEntity() {
-    // If this entity is a bundle entity type of another entity type, and we're
-    // updating an existing entity, and that other entity type has a view
-    // builder class, then invalidate the render cache of entities for which
-    // this entity is a bundle.
     $bundle_of = $this->getEntityType()->getBundleOf();
-    $entity_manager = \Drupal::entityManager();
-    if ($bundle_of !== FALSE && $entity_manager->hasController($bundle_of, 'view_builder')) {
-      $entity_manager->getViewBuilder($bundle_of)->resetCache();
+    if ($bundle_of !== FALSE) {
+      // If this entity is a bundle entity type of another entity type, and we're
+      // updating an existing entity, and that other entity type has a view
+      // builder class, then invalidate the render cache of entities for which
+      // this entity is a bundle.
+      $entity_manager = $this->entityManager();
+      if ($entity_manager->hasController($bundle_of, 'view_builder')) {
+        $entity_manager->getViewBuilder($bundle_of)->resetCache();
+      }
+      // Entity bundle field definitions may depend on bundle settings.
+      $entity_manager->clearCachedFieldDefinitions();
     }
   }
 
diff --git a/core/lib/Drupal/Core/Entity/EntityStorageBase.php b/core/lib/Drupal/Core/Entity/EntityStorageBase.php
index 5d24441d2fa8..f10eba961994 100644
--- a/core/lib/Drupal/Core/Entity/EntityStorageBase.php
+++ b/core/lib/Drupal/Core/Entity/EntityStorageBase.php
@@ -76,6 +76,7 @@ public function __construct(EntityTypeInterface $entity_type) {
     $this->entityTypeId = $entity_type->id();
     $this->entityType = $entity_type;
     $this->idKey = $this->entityType->getKey('id');
+    $this->uuidKey = $this->entityType->getKey('uuid');
     $this->entityClass = $this->entityType->getClass();
   }
 
diff --git a/core/lib/Drupal/Core/Entity/Query/Sql/Tables.php b/core/lib/Drupal/Core/Entity/Query/Sql/Tables.php
index 50ab59bd4ed4..69266038bc5b 100644
--- a/core/lib/Drupal/Core/Entity/Query/Sql/Tables.php
+++ b/core/lib/Drupal/Core/Entity/Query/Sql/Tables.php
@@ -12,6 +12,7 @@
 use Drupal\Core\Entity\EntityStorageInterface;
 use Drupal\Core\Entity\ContentEntityDatabaseStorage;
 use Drupal\Core\Entity\Query\QueryException;
+use Drupal\Core\Entity\Sql\SqlEntityStorageInterface;
 use Drupal\field\Entity\FieldConfig;
 use Drupal\field\FieldConfigInterface;
 
@@ -35,7 +36,6 @@ class Tables implements TablesInterface {
    */
   protected $entityTables = array();
 
-
   /**
    * Field table array, key is table name, value is alias.
    *
@@ -45,11 +45,19 @@ class Tables implements TablesInterface {
    */
   protected $fieldTables = array();
 
+  /**
+   * The entity manager.
+   *
+   * @var \Drupal\Core\Entity\EntityManager
+   */
+  protected $entityManager;
+
   /**
    * @param \Drupal\Core\Database\Query\SelectInterface $sql_query
    */
   public function __construct(SelectInterface $sql_query) {
     $this->sqlQuery = $sql_query;
+    $this->entityManager = \Drupal::entityManager();
   }
 
   /**
@@ -57,7 +65,6 @@ public function __construct(SelectInterface $sql_query) {
    */
   public function addField($field, $type, $langcode) {
     $entity_type_id = $this->sqlQuery->getMetaData('entity_type');
-    $entity_manager = \Drupal::entityManager();
     $age = $this->sqlQuery->getMetaData('age');
     // This variable ensures grouping works correctly. For example:
     // ->condition('tags', 2, '>')
@@ -73,13 +80,13 @@ public function addField($field, $type, $langcode) {
     // This will contain the definitions of the last specifier seen by the
     // system.
     $propertyDefinitions = array();
-    $entity_type = $entity_manager->getDefinition($entity_type_id);
+    $entity_type = $this->entityManager->getDefinition($entity_type_id);
 
     $field_storage_definitions = array();
     // @todo Needed for menu links, make this implementation content entity
     //   specific after https://drupal.org/node/2256521.
     if ($entity_type instanceof ContentEntityTypeInterface) {
-      $field_storage_definitions = $entity_manager->getFieldStorageDefinitions($entity_type_id);
+      $field_storage_definitions = $this->entityManager->getFieldStorageDefinitions($entity_type_id);
     }
     for ($key = 0; $key <= $count; $key ++) {
       // If there is revision support and only the current revision is being
@@ -154,10 +161,10 @@ public function addField($field, $type, $langcode) {
         $entity_tables = array();
         if ($data_table = $entity_type->getDataTable()) {
           $this->sqlQuery->addMetaData('simple_query', FALSE);
-          $entity_tables[$data_table] = drupal_get_schema($data_table);
+          $entity_tables[$data_table] = $this->getTableMapping($data_table, $entity_type_id);
         }
         $entity_base_table = $entity_type->getBaseTable();
-        $entity_tables[$entity_base_table] = drupal_get_schema($entity_base_table);
+        $entity_tables[$entity_base_table] = $this->getTableMapping($entity_base_table, $entity_type_id);
         $sql_column = $specifier;
         $table = $this->ensureEntityTable($index_prefix, $specifier, $type, $langcode, $base_table, $entity_id_field, $entity_tables);
       }
@@ -174,8 +181,8 @@ public function addField($field, $type, $langcode) {
         if (isset($propertyDefinitions[$relationship_specifier]) && $field->getPropertyDefinition('entity')->getDataType() == 'entity_reference' ) {
           // If it is, use the entity type.
           $entity_type_id = $propertyDefinitions[$relationship_specifier]->getTargetDefinition()->getEntityTypeId();
-          $entity_type = $entity_manager->getDefinition($entity_type_id);
-          $field_storage_definitions = $entity_manager->getFieldStorageDefinitions($entity_type_id);
+          $entity_type = $this->entityManager->getDefinition($entity_type_id);
+          $field_storage_definitions = $this->entityManager->getFieldStorageDefinitions($entity_type_id);
           // Add the new entity base table using the table and sql column.
           $join_condition= '%alias.' . $entity_type->getKey('id') . " = $table.$sql_column";
           $base_table = $this->sqlQuery->leftJoin($entity_type->getBaseTable(), NULL, $join_condition);
@@ -199,8 +206,8 @@ public function addField($field, $type, $langcode) {
    * @throws \Drupal\Core\Entity\Query\QueryException
    */
   protected function ensureEntityTable($index_prefix, $property, $type, $langcode, $base_table, $id_field, $entity_tables) {
-    foreach ($entity_tables as $table => $schema) {
-      if (isset($schema['fields'][$property])) {
+    foreach ($entity_tables as $table => $mapping) {
+      if (isset($mapping[$property])) {
         if (!isset($this->entityTables[$index_prefix . $table])) {
           $this->entityTables[$index_prefix . $table] = $this->addJoin($type, $table, "%alias.$id_field = $base_table.$id_field", $langcode);
         }
@@ -241,4 +248,27 @@ protected function addJoin($type, $table, $join_condition, $langcode) {
     return $this->sqlQuery->addJoin($type, $table, NULL, $join_condition, $arguments);
   }
 
+  /**
+   * Returns the schema for the given table.
+   *
+   * @param string $table
+   *   The table name.
+   *
+   * @return array|bool
+   *   The table field mapping for the given table or FALSE if not available.
+   */
+  protected function getTableMapping($table, $entity_type_id) {
+    $storage = $this->entityManager->getStorage($entity_type_id);
+    if ($storage instanceof SqlEntityStorageInterface) {
+      $mapping = $storage->getTableMapping()->getAllColumns($table);
+    }
+    else {
+      // @todo Stop calling drupal_get_schema() once menu links are converted
+      //   to the Entity Field API. See https://drupal.org/node/1842858.
+      $schema = drupal_get_schema($table);
+      $mapping = array_keys($schema['fields']);
+    }
+    return array_flip($mapping);
+  }
+
 }
diff --git a/core/lib/Drupal/Core/Entity/Schema/ContentEntitySchemaHandler.php b/core/lib/Drupal/Core/Entity/Schema/ContentEntitySchemaHandler.php
new file mode 100644
index 000000000000..5e7c0e511add
--- /dev/null
+++ b/core/lib/Drupal/Core/Entity/Schema/ContentEntitySchemaHandler.php
@@ -0,0 +1,518 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Core\Entity\Schema\ContentEntitySchemaHandler.
+ */
+
+namespace Drupal\Core\Entity\Schema;
+
+use Drupal\Core\Entity\ContentEntityDatabaseStorage;
+use Drupal\Core\Entity\ContentEntityTypeInterface;
+use Drupal\Core\Entity\EntityManagerInterface;
+
+/**
+ * Defines a schema handler that supports revisionable, translatable entities.
+ */
+class ContentEntitySchemaHandler implements EntitySchemaHandlerInterface {
+
+  /**
+   * The entity type this schema builder is responsible for.
+   *
+   * @var \Drupal\Core\Entity\ContentEntityTypeInterface
+   */
+  protected $entityType;
+
+  /**
+   * The storage field definitions for this entity type.
+   *
+   * @var \Drupal\Core\Field\FieldDefinitionInterface[]
+   */
+  protected $fieldStorageDefinitions;
+
+  /**
+   * The storage object for the given entity type.
+   *
+   * @var \Drupal\Core\Entity\ContentEntityDatabaseStorage
+   */
+  protected $storage;
+
+  /**
+   * A static cache of the generated schema array.
+   *
+   * @var array
+   */
+  protected $schema;
+
+  /**
+   * Constructs a ContentEntitySchemaHandler.
+   *
+   * @param \Drupal\Core\Entity\EntityManagerInterface $entity_manager
+   *   The entity manager.
+   * @param \Drupal\Core\Entity\ContentEntityTypeInterface $entity_type
+   *   The entity type.
+   * @param \Drupal\Core\Entity\ContentEntityDatabaseStorage $storage
+   *   The storage of the entity type. This must be an SQL-based storage.
+   */
+  public function __construct(EntityManagerInterface $entity_manager, ContentEntityTypeInterface $entity_type, ContentEntityDatabaseStorage $storage) {
+    $this->entityType = $entity_type;
+    $this->fieldStorageDefinitions = $entity_manager->getFieldStorageDefinitions($entity_type->id());
+    $this->storage = $storage;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getSchema() {
+    // Prepare basic information about the entity type.
+    $tables = $this->getTables();
+
+    if (!isset($this->schema[$this->entityType->id()])) {
+      // Initialize the table schema.
+      $schema[$tables['base_table']] = $this->initializeBaseTable();
+      if (isset($tables['revision_table'])) {
+        $schema[$tables['revision_table']] = $this->initializeRevisionTable();
+      }
+      if (isset($tables['data_table'])) {
+        $schema[$tables['data_table']] = $this->initializeDataTable();
+      }
+      if (isset($tables['revision_data_table'])) {
+        $schema[$tables['revision_data_table']] = $this->initializeRevisionDataTable();
+      }
+
+      $table_mapping = $this->storage->getTableMapping();
+      foreach ($table_mapping->getTableNames() as $table_name) {
+        // Add the schema from field definitions.
+        foreach ($table_mapping->getFieldNames($table_name) as $field_name) {
+          $column_names = $table_mapping->getColumnNames($field_name);
+          $this->addFieldSchema($schema[$table_name], $field_name, $column_names);
+        }
+
+        // Add the schema for extra fields.
+        foreach ($table_mapping->getExtraColumns($table_name) as $column_name) {
+          if ($column_name == 'default_langcode') {
+            $this->addDefaultLangcodeSchema($schema[$table_name]);
+          }
+        }
+      }
+
+      // Process tables after having gathered field information.
+      $this->processBaseTable($schema[$tables['base_table']]);
+      if (isset($tables['revision_table'])) {
+        $this->processRevisionTable($schema[$tables['revision_table']]);
+      }
+      if (isset($tables['data_table'])) {
+        $this->processDataTable($schema[$tables['data_table']]);
+      }
+      if (isset($tables['revision_data_table'])) {
+        $this->processRevisionDataTable($schema[$tables['revision_data_table']]);
+      }
+
+      $this->schema[$this->entityType->id()] = $schema;
+    }
+
+    return $this->schema[$this->entityType->id()];
+  }
+
+  /**
+   * Gets a list of entity type tables.
+   *
+   * @return array
+   *   A list of entity type tables, keyed by table key.
+   */
+  protected function getTables() {
+    return array_filter(array(
+      'base_table' => $this->storage->getBaseTable(),
+      'revision_table' => $this->storage->getRevisionTable(),
+      'data_table' => $this->storage->getDataTable(),
+      'revision_data_table' => $this->storage->getRevisionDataTable(),
+    ));
+  }
+
+  /**
+   * Returns the schema for a single field definition.
+   *
+   * @param array $schema
+   *   The table schema to add the field schema to, passed by reference.
+   * @param string $field_name
+   *   The name of the field.
+   * @param string[] $column_mapping
+   *   A mapping of field column names to database column names.
+   */
+  protected function addFieldSchema(array &$schema, $field_name, array $column_mapping) {
+    $field_schema = $this->fieldStorageDefinitions[$field_name]->getSchema();
+    $field_description = $this->fieldStorageDefinitions[$field_name]->getDescription();
+
+    foreach ($column_mapping as $field_column_name => $schema_field_name) {
+      $column_schema = $field_schema['columns'][$field_column_name];
+
+      $schema['fields'][$schema_field_name] = $column_schema;
+      $schema['fields'][$schema_field_name]['description'] = $field_description;
+      // Only entity keys are required.
+      $keys = $this->entityType->getKeys() + array('langcode' => 'langcode');
+      // The label is an entity key, but label fields are not necessarily
+      // required.
+      // Because entity ID and revision ID are both serial fields in the base
+      // and revision table respectively, the revision ID is not known yet, when
+      // inserting data into the base table. Instead the revision ID in the base
+      // table is updated after the data has been inserted into the revision
+      // table. For this reason the revision ID field cannot be marked as NOT
+      // NULL.
+      unset($keys['label'], $keys['revision']);
+      // Key fields may not be NULL.
+      if (in_array($field_name, $keys)) {
+        $schema['fields'][$schema_field_name]['not null'] = TRUE;
+      }
+    }
+
+    if (!empty($field_schema['indexes'])) {
+      $indexes = $this->getFieldIndexes($field_name, $field_schema, $column_mapping);
+      $schema['indexes'] = array_merge($schema['indexes'], $indexes);
+    }
+
+    if (!empty($field_schema['unique keys'])) {
+      $unique_keys = $this->getFieldUniqueKeys($field_name, $field_schema, $column_mapping);
+      $schema['unique keys'] = array_merge($schema['unique keys'], $unique_keys);
+    }
+
+    if (!empty($field_schema['foreign keys'])) {
+      $foreign_keys = $this->getFieldForeignKeys($field_name, $field_schema, $column_mapping);
+      $schema['foreign keys'] = array_merge($schema['foreign keys'], $foreign_keys);
+    }
+  }
+
+  /**
+   * Returns an index schema array for a given field.
+   *
+   * @param string $field_name
+   *   The name of the field.
+   * @param array $field_schema
+   *   The schema of the field.
+   * @param string[] $column_mapping
+   *   A mapping of field column names to database column names.
+   *
+   * @return array
+   *   The schema definition for the indexes.
+   */
+  protected function getFieldIndexes($field_name, array $field_schema, array $column_mapping) {
+    return $this->getFieldSchemaData($field_name, $field_schema, $column_mapping, 'indexes');
+  }
+
+  /**
+   * Returns a unique key schema array for a given field.
+   *
+   * @param string $field_name
+   *   The name of the field.
+   * @param array $field_schema
+   *   The schema of the field.
+   * @param string[] $column_mapping
+   *   A mapping of field column names to database column names.
+   *
+   * @return array
+   *   The schema definition for the unique keys.
+   */
+  protected function getFieldUniqueKeys($field_name, array $field_schema, array $column_mapping) {
+    return $this->getFieldSchemaData($field_name, $field_schema, $column_mapping, 'unique keys');
+  }
+
+  /**
+   * Returns field schema data for the given key.
+   *
+   * @param string $field_name
+   *   The name of the field.
+   * @param array $field_schema
+   *   The schema of the field.
+   * @param string[] $column_mapping
+   *   A mapping of field column names to database column names.
+   * @param string $schema_key
+   *   The type of schema data. Either 'indexes' or 'unique keys'.
+   *
+   * @return array
+   *   The schema definition for the specified key.
+   */
+  protected function getFieldSchemaData($field_name, array $field_schema, array $column_mapping, $schema_key) {
+    $data = array();
+
+    foreach ($field_schema[$schema_key] as $key => $columns) {
+      // To avoid clashes with entity-level indexes or unique keys we use
+      // "{$entity_type_id}_field__" as a prefix instead of just
+      // "{$entity_type_id}__". We additionally namespace the specifier by the
+      // field name to avoid clashes when multiple fields of the same type are
+      // added to an entity type.
+      $entity_type_id = $this->entityType->id();
+      $real_key = "{$entity_type_id}_field__{$field_name}__{$key}";
+      foreach ($columns as $column) {
+        // Allow for indexes and unique keys to specified as an array of column
+        // name and length.
+        if (is_array($column)) {
+          list($column_name, $length) = $column;
+          $data[$real_key][] = array($column_mapping[$column_name], $length);
+        }
+        else {
+          $data[$real_key][] = $column_mapping[$column];
+        }
+      }
+    }
+
+    return $data;
+  }
+
+  /**
+   * Returns field foreign keys.
+   *
+   * @param string $field_name
+   *   The name of the field.
+   * @param array $field_schema
+   *   The schema of the field.
+   * @param string[] $column_mapping
+   *   A mapping of field column names to database column names.
+   *
+   * @return array
+   *   The schema definition for the foreign keys.
+   */
+  protected function getFieldForeignKeys($field_name, array $field_schema, array $column_mapping) {
+    $foreign_keys = array();
+
+    foreach ($field_schema['foreign keys'] as $specifier => $specification) {
+      // To avoid clashes with entity-level foreign keys we use
+      // "{$entity_type_id}_field__" as a prefix instead of just
+      // "{$entity_type_id}__". We additionally namespace the specifier by the
+      // field name to avoid clashes when multiple fields of the same type are
+      // added to an entity type.
+      $entity_type_id = $this->entityType->id();
+      $real_specifier = "{$entity_type_id}_field__{$field_name}__{$specifier}";
+      $foreign_keys[$real_specifier]['table'] = $specification['table'];
+      foreach ($specification['columns'] as $column => $referenced) {
+        $foreign_keys[$real_specifier]['columns'][$column_mapping[$column]] = $referenced;
+      }
+    }
+
+    return $foreign_keys;
+  }
+
+  /**
+   * Returns the schema for the 'default_langcode' metadata field.
+   *
+   * @param array $schema
+   *   The table schema to add the field schema to, passed by reference.
+   *
+   * @return array
+   *   A schema field array for the 'default_langcode' metadata field.
+   */
+  protected function addDefaultLangcodeSchema(&$schema) {
+    $schema['fields']['default_langcode'] =  array(
+      'description' => 'Boolean indicating whether field values are in the default entity language.',
+      'type' => 'int',
+      'size' => 'tiny',
+      'not null' => TRUE,
+      'default' => 1,
+    );
+  }
+
+  /**
+   * Initializes common information for a base table.
+   *
+   * @return array
+   *   A partial schema array for the base table.
+   */
+  protected function initializeBaseTable() {
+    $entity_type_id = $this->entityType->id();
+
+    $schema = array(
+      'description' => "The base table for $entity_type_id entities.",
+      'primary key' => array($this->entityType->getKey('id')),
+      'indexes' => array(),
+      'foreign keys' => array(),
+    );
+
+    if ($this->entityType->hasKey('uuid')) {
+      $uuid_key = $this->entityType->getKey('uuid');
+      $schema['unique keys'] = array(
+        $this->getEntityIndexName($uuid_key) => array($uuid_key),
+      );
+    }
+
+    if ($this->entityType->hasKey('revision')) {
+      $revision_key = $this->entityType->getKey('revision');
+      $key_name = $this->getEntityIndexName($revision_key);
+      $schema['unique keys'][$key_name] = array($revision_key);
+      $schema['foreign keys'][$entity_type_id . '__revision'] = array(
+        'table' => $this->storage->getRevisionTable(),
+        'columns' => array($revision_key => $revision_key),
+      );
+    }
+
+    return $schema;
+  }
+
+  /**
+   * Initializes common information for a revision table.
+   *
+   * @return array
+   *   A partial schema array for the revision table.
+   */
+  protected function initializeRevisionTable() {
+    $entity_type_id = $this->entityType->id();
+    $id_key = $this->entityType->getKey('id');
+    $revision_key = $this->entityType->getKey('revision');
+
+    $schema = array(
+      'description' => "The revision table for $entity_type_id entities.",
+      'primary key' => array($revision_key),
+      'indexes' => array(),
+      'foreign keys' => array(
+         $entity_type_id . '__revisioned' => array(
+          'table' => $this->storage->getBaseTable(),
+          'columns' => array($id_key => $id_key),
+        ),
+      ),
+    );
+
+    $schema['indexes'][$this->getEntityIndexName($id_key)] = array($id_key);
+
+    return $schema;
+  }
+
+  /**
+   * Initializes common information for a data table.
+   *
+   * @return array
+   *   A partial schema array for the data table.
+   */
+  protected function initializeDataTable() {
+    $entity_type_id = $this->entityType->id();
+    $id_key = $this->entityType->getKey('id');
+
+    $schema = array(
+      'description' => "The data table for $entity_type_id entities.",
+      // @todo Use the language entity key when https://drupal.org/node/2143729
+      //   is in.
+      'primary key' => array($id_key, 'langcode'),
+      'indexes' => array(),
+      'foreign keys' => array(
+        $entity_type_id => array(
+          'table' => $this->storage->getBaseTable(),
+          'columns' => array($id_key => $id_key),
+        ),
+      ),
+    );
+
+    if ($this->entityType->hasKey('revision')) {
+      $key = $this->entityType->getKey('revision');
+      $schema['indexes'][$this->getEntityIndexName($key)] = array($key);
+    }
+
+    return $schema;
+  }
+
+  /**
+   * Initializes common information for a revision data table.
+   *
+   * @return array
+   *   A partial schema array for the revision data table.
+   */
+  protected function initializeRevisionDataTable() {
+    $entity_type_id = $this->entityType->id();
+    $id_key = $this->entityType->getKey('id');
+    $revision_key = $this->entityType->getKey('revision');
+
+    $schema = array(
+      'description' => "The revision data table for $entity_type_id entities.",
+      // @todo Use the language entity key when https://drupal.org/node/2143729
+      //   is in.
+      'primary key' => array($revision_key, 'langcode'),
+      'indexes' => array(),
+      'foreign keys' => array(
+        $entity_type_id => array(
+          'table' => $this->storage->getBaseTable(),
+          'columns' => array($id_key => $id_key),
+        ),
+        $entity_type_id . '__revision' => array(
+          'table' => $this->storage->getRevisionTable(),
+          'columns' => array($revision_key => $revision_key),
+        )
+      ),
+    );
+
+    return $schema;
+  }
+
+  /**
+   * Processes the gathered schema for a base table.
+   *
+   * @param array $schema
+   *   The table schema, passed by reference.
+   *
+   * @return array
+   *   A partial schema array for the base table.
+   */
+  protected function processBaseTable(array &$schema) {
+    $this->processIdentifierSchema($schema, $this->entityType->getKey('id'));
+  }
+
+  /**
+   * Processes the gathered schema for a base table.
+   *
+   * @param array $schema
+   *   The table schema, passed by reference.
+   *
+   * @return array
+   *   A partial schema array for the base table.
+   */
+  protected function processRevisionTable(array &$schema) {
+    $this->processIdentifierSchema($schema, $this->entityType->getKey('revision'));
+  }
+
+  /**
+   * Processes the gathered schema for a base table.
+   *
+   * @param array $schema
+   *   The table schema, passed by reference.
+   *
+   * @return array
+   *   A partial schema array for the base table.
+   */
+  protected function processDataTable(array &$schema) {
+  }
+
+  /**
+   * Processes the gathered schema for a base table.
+   *
+   * @param array $schema
+   *   The table schema, passed by reference.
+   *
+   * @return array
+   *   A partial schema array for the base table.
+   */
+  protected function processRevisionDataTable(array &$schema) {
+  }
+
+  /**
+   * Processes the specified entity key.
+   *
+   * @param array $schema
+   *   The table schema, passed by reference.
+   * @param string $key
+   *   The entity key name.
+   */
+  protected function processIdentifierSchema(&$schema, $key) {
+    if ($schema['fields'][$key]['type'] == 'int') {
+      $schema['fields'][$key]['type'] = 'serial';
+    }
+    unset($schema['fields'][$key]['default']);
+  }
+
+  /**
+   * Returns the name to be used for the given entity index.
+   *
+   * @param string $index
+   *   The index column name.
+   *
+   * @return string
+   *   The index name.
+   */
+  protected function getEntityIndexName($index) {
+    return $this->entityType->id() . '__' . $index;
+  }
+
+}
diff --git a/core/lib/Drupal/Core/Entity/Schema/EntitySchemaHandlerInterface.php b/core/lib/Drupal/Core/Entity/Schema/EntitySchemaHandlerInterface.php
new file mode 100644
index 000000000000..a38b82c4db9b
--- /dev/null
+++ b/core/lib/Drupal/Core/Entity/Schema/EntitySchemaHandlerInterface.php
@@ -0,0 +1,14 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Core\Entity\Schema\EntitySchemaHandlerInterface.
+ */
+
+namespace Drupal\Core\Entity\Schema;
+
+/**
+ * Defines an interface for handling the storage schema of entities.
+ */
+interface EntitySchemaHandlerInterface extends EntitySchemaProviderInterface {
+}
diff --git a/core/lib/Drupal/Core/Entity/Schema/EntitySchemaProviderInterface.php b/core/lib/Drupal/Core/Entity/Schema/EntitySchemaProviderInterface.php
new file mode 100644
index 000000000000..c97678225eaa
--- /dev/null
+++ b/core/lib/Drupal/Core/Entity/Schema/EntitySchemaProviderInterface.php
@@ -0,0 +1,23 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Core\Entity\Schema\EntitySchemaProviderInterface.
+ */
+
+namespace Drupal\Core\Entity\Schema;
+
+/**
+ * Defines a common interface to return the storage schema for entities.
+ */
+interface EntitySchemaProviderInterface {
+
+  /**
+   * Gets the full schema array for a given entity type.
+   *
+   * @return array
+   *   A schema array for the entity type's tables.
+   */
+  public function getSchema();
+
+}
diff --git a/core/lib/Drupal/Core/Entity/Sql/DefaultTableMapping.php b/core/lib/Drupal/Core/Entity/Sql/DefaultTableMapping.php
new file mode 100644
index 000000000000..e872d57aad03
--- /dev/null
+++ b/core/lib/Drupal/Core/Entity/Sql/DefaultTableMapping.php
@@ -0,0 +1,180 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Core\Entity\Sql\DefaultTableMapping.
+ */
+
+namespace Drupal\Core\Entity\Sql;
+
+/**
+ * Defines a default table mapping class.
+ */
+class DefaultTableMapping implements TableMappingInterface {
+
+  /**
+   * A list of field storage definitions that are available for this mapping.
+   *
+   * @var \Drupal\Core\Field\FieldStorageDefinitionInterface[]
+   */
+  protected $fieldStorageDefinitions = array();
+
+  /**
+   * A list of field names per table.
+   *
+   * This corresponds to the return value of
+   * TableMappingInterface::getFieldNames() except that this variable is
+   * additionally keyed by table name.
+   *
+   * @var array[]
+   */
+  protected $fieldNames = array();
+
+  /**
+   * A list of database columns which store denormalized data per table.
+   *
+   * This corresponds to the return value of
+   * TableMappingInterface::getExtraColumns() except that this variable is
+   * additionally keyed by table name.
+   *
+   * @var array[]
+   */
+  protected $extraColumns = array();
+
+  /**
+   * A mapping of column names per field name.
+   *
+   * This corresponds to the return value of
+   * TableMappingInterface::getColumnNames() except that this variable is
+   * additionally keyed by field name.
+   *
+   * This data is derived from static::$storageDefinitions, but is stored
+   * separately to avoid repeated processing.
+   *
+   * @var array[]
+   */
+  protected $columnMapping = array();
+
+  /**
+   * A list of all database columns per table.
+   *
+   * This corresponds to the return value of
+   * TableMappingInterface::getAllColumns() except that this variable is
+   * additionally keyed by table name.
+   *
+   * This data is derived from static::$storageDefinitions, static::$fieldNames,
+   * and static::$extraColumns, but is stored separately to avoid repeated
+   * processing.
+   *
+   * @var array[]
+   */
+  protected $allColumns = array();
+
+  /**
+   * Constructs a DefaultTableMapping.
+   *
+   * @param \Drupal\Core\Field\FieldStorageDefinitionInterface[] $storage_definitions
+   *   A list of field storage definitions that should be available for the
+   *   field columns of this table mapping.
+   */
+  public function __construct(array $storage_definitions) {
+    $this->fieldStorageDefinitions = $storage_definitions;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getTableNames() {
+    return array_unique(array_merge(array_keys($this->fieldNames), array_keys($this->extraColumns)));
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getAllColumns($table_name) {
+    if (!isset($this->allColumns[$table_name])) {
+      $this->allColumns[$table_name] = array();
+
+      foreach ($this->getFieldNames($table_name) as $field_name) {
+        $this->allColumns[$table_name] = array_merge($this->allColumns[$table_name], array_values($this->getColumnNames($field_name)));
+      }
+
+      $this->allColumns[$table_name] = array_merge($this->allColumns[$table_name], $this->getExtraColumns($table_name));
+    }
+    return $this->allColumns[$table_name];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getFieldNames($table_name) {
+    if (isset($this->fieldNames[$table_name])) {
+      return $this->fieldNames[$table_name];
+    }
+    return array();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getColumnNames($field_name) {
+    if (!isset($this->columnMapping[$field_name])) {
+      $column_names = array_keys($this->fieldStorageDefinitions[$field_name]->getColumns());
+      if (count($column_names) == 1) {
+        $this->columnMapping[$field_name] = array(reset($column_names) => $field_name);
+      }
+      else {
+        $this->columnMapping[$field_name] = array();
+        foreach ($column_names as $column_name) {
+          $this->columnMapping[$field_name][$column_name] = $field_name . '__' . $column_name;
+        }
+      }
+    }
+    return $this->columnMapping[$field_name];
+  }
+
+  /**
+   * Adds field columns for a table to the table mapping.
+   *
+   * @param string $table_name
+   *   The name of the table to add the field column for.
+   * @param string[] $field_names
+   *   A list of field names to add the columns for.
+   *
+   * @return $this
+   */
+  public function setFieldNames($table_name, array $field_names) {
+    $this->fieldNames[$table_name] = $field_names;
+    // Force the re-computation of the column list.
+    unset($this->allColumns[$table_name]);
+    return $this;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getExtraColumns($table_name) {
+    if (isset($this->extraColumns[$table_name])) {
+      return $this->extraColumns[$table_name];
+    }
+    return array();
+  }
+
+  /**
+   * Adds a extra columns for a table to the table mapping.
+   *
+   * @param string $table_name
+   *   The name of table to add the extra columns for.
+   * @param string[] $column_names
+   *   The list of column names.
+   *
+   * @return $this
+   */
+  public function setExtraColumns($table_name, array $column_names) {
+    $this->extraColumns[$table_name] = $column_names;
+    // Force the re-computation of the column list.
+    unset($this->allColumns[$table_name]);
+    return $this;
+  }
+
+}
diff --git a/core/lib/Drupal/Core/Entity/Sql/SqlEntityStorageInterface.php b/core/lib/Drupal/Core/Entity/Sql/SqlEntityStorageInterface.php
new file mode 100644
index 000000000000..8c4e3d87d961
--- /dev/null
+++ b/core/lib/Drupal/Core/Entity/Sql/SqlEntityStorageInterface.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Core\Entity\Sql\SqlEntityStorageInterface.
+ */
+
+namespace Drupal\Core\Entity\Sql;
+
+use Drupal\Core\Entity\EntityStorageInterface;
+use Drupal\Core\Entity\Schema\EntitySchemaProviderInterface;
+
+/**
+ * A common interface for SQL-based storage controllers.
+ */
+interface SqlEntityStorageInterface extends EntityStorageInterface, EntitySchemaProviderInterface {
+
+  /**
+   * Gets a table mapping for the entity's SQL tables.
+   *
+   * @return \Drupal\Core\Entity\Sql\TableMappingInterface
+   *   A table mapping object for the entity's tables.
+   */
+  public function getTableMapping();
+
+}
diff --git a/core/lib/Drupal/Core/Entity/Sql/TableMappingInterface.php b/core/lib/Drupal/Core/Entity/Sql/TableMappingInterface.php
new file mode 100644
index 000000000000..c6b5706972c3
--- /dev/null
+++ b/core/lib/Drupal/Core/Entity/Sql/TableMappingInterface.php
@@ -0,0 +1,73 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Core\Entity\Sql\TableMappingInterface.
+ */
+
+namespace Drupal\Core\Entity\Sql;
+
+/**
+ * Provides a common interface for mapping field columns to SQL tables.
+ */
+interface TableMappingInterface {
+
+  /**
+   * Returns a list of table names for this mapping.
+   *
+   * @return string[]
+   *   An array of table names.
+   */
+  public function getTableNames();
+
+  /**
+   * Returns a list of all database columns for a given table.
+   *
+   * @param string $table_name
+   *   The name of the table to return the columns for.
+   *
+   * @return string[]
+   *   An array of database column names for this table. Both field columns and
+   *   extra columns are returned.
+   */
+  public function getAllColumns($table_name);
+
+  /**
+   * Returns a list of names of fields stored in the specified table.
+   *
+   * @param string $table_name
+   *   The name of the table to return the field names for.
+   *
+   * @return string[]
+   *   An array of field names for the given table.
+   */
+  public function getFieldNames($table_name);
+
+  /**
+   * Returns a mapping of field columns to database columns for a given field.
+   *
+   * @param string $field_name
+   *   The name of the entity field to return the column mapping for.
+   *
+   * @return string[]
+   *   The keys of this array are the keys of the array returned by
+   *   FieldStorageDefinitionInterface::getColumns() while the respective values
+   *   are the names of the database columns for this table mapping.
+   */
+  public function getColumnNames($field_name);
+
+  /**
+   * Returns a list of extra database columns, which store denormalized data.
+   *
+   * These database columns do not belong to any entity fields. Any normalized
+   * data that is stored should be associated with an entity field.
+   *
+   * @param string $table_name
+   *   The name of the table to return the columns for.
+   *
+   * @return string[]
+   *   An array of column names for the given table.
+   */
+  public function getExtraColumns($table_name);
+
+}
diff --git a/core/lib/Drupal/Core/Extension/ModuleHandler.php b/core/lib/Drupal/Core/Extension/ModuleHandler.php
index 140a124d3946..89b47b3ee5f9 100644
--- a/core/lib/Drupal/Core/Extension/ModuleHandler.php
+++ b/core/lib/Drupal/Core/Extension/ModuleHandler.php
@@ -11,6 +11,7 @@
 use Drupal\Component\Serialization\Yaml;
 use Drupal\Component\Utility\NestedArray;
 use Drupal\Core\Cache\CacheBackendInterface;
+use Drupal\Core\Entity\Schema\EntitySchemaProviderInterface;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 
 /**
@@ -796,6 +797,22 @@ public function install(array $module_list, $enable_dependencies = TRUE) {
         }
         drupal_set_installed_schema_version($module, $version);
 
+        // Install any entity schemas belonging to the module.
+        $entity_manager = \Drupal::entityManager();
+        $schema = \Drupal::database()->schema();
+        foreach ($entity_manager->getDefinitions() as $entity_type) {
+          if ($entity_type->getProvider() == $module) {
+            $storage = $entity_manager->getStorage($entity_type->id());
+            if ($storage instanceof EntitySchemaProviderInterface) {
+              foreach ($storage->getSchema() as $table_name => $table_schema) {
+                if (!$schema->tableExists($table_name)) {
+                  $schema->createTable($table_name, $table_schema);
+                }
+              }
+            }
+          }
+        }
+
         // Record the fact that it was installed.
         $modules_installed[] = $module;
 
@@ -888,6 +905,22 @@ public function uninstall(array $module_list, $uninstall_dependents = TRUE) {
       // Remove all configuration belonging to the module.
       \Drupal::service('config.manager')->uninstall('module', $module);
 
+      // Remove any entity schemas belonging to the module.
+      $entity_manager = \Drupal::entityManager();
+      $schema = \Drupal::database()->schema();
+      foreach ($entity_manager->getDefinitions() as $entity_type) {
+        if ($entity_type->getProvider() == $module) {
+          $storage = $entity_manager->getStorage($entity_type->id());
+          if ($storage instanceof EntitySchemaProviderInterface) {
+            foreach ($storage->getSchema() as $table_name => $table_schema) {
+              if ($schema->tableExists($table_name)) {
+                $schema->dropTable($table_name);
+              }
+            }
+          }
+        }
+      }
+
       // Remove the schema.
       drupal_uninstall_schema($module);
 
diff --git a/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/EntityReferenceItem.php b/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/EntityReferenceItem.php
index 7fb16ab1e76a..7a022544ca9f 100644
--- a/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/EntityReferenceItem.php
+++ b/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/EntityReferenceItem.php
@@ -7,6 +7,7 @@
 
 namespace Drupal\Core\Field\Plugin\Field\FieldType;
 
+use Drupal\Core\Entity\EntityTypeInterface;
 use Drupal\Core\Entity\TypedData\EntityDataDefinition;
 use Drupal\Core\Field\FieldStorageDefinitionInterface;
 use Drupal\Core\Field\FieldItemBase;
@@ -114,7 +115,9 @@ public static function schema(FieldStorageDefinitionInterface $field_definition)
         'target_id' => array(
           'description' => 'The ID of the target entity.',
           'type' => 'varchar',
-          'length' => '255',
+          // If the target entities act as bundles for another entity type,
+          // their IDs should not exceed the maximum length for bundles.
+          'length' => $target_type_info->getBundleOf() ? EntityTypeInterface::BUNDLE_MAX_LENGTH : 255,
         ),
       );
     }
diff --git a/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/IntegerItem.php b/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/IntegerItem.php
index 2bafa8be0383..2d3fa30f1010 100644
--- a/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/IntegerItem.php
+++ b/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/IntegerItem.php
@@ -41,6 +41,9 @@ public static function defaultInstanceSettings() {
       'max' => '',
       'prefix' => '',
       'suffix' => '',
+      // Valid size property values include: 'tiny', 'small', 'medium', 'normal'
+      // and 'big'.
+      'size' => 'normal',
     ) + parent::defaultInstanceSettings();
   }
 
@@ -91,6 +94,9 @@ public static function schema(FieldStorageDefinitionInterface $field_definition)
           'not null' => FALSE,
           // Expose the 'unsigned' setting in the field item schema.
           'unsigned' => $field_definition->getSetting('unsigned'),
+          // Expose the 'size' setting in the field item schema. For instance,
+          // supply 'big' as a value to produce a 'bigint' type.
+          'size' => $field_definition->getSetting('size'),
         ),
       ),
     );
diff --git a/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/UriItem.php b/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/UriItem.php
index 693e4ce3dc34..dbef995e4ad2 100644
--- a/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/UriItem.php
+++ b/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/UriItem.php
@@ -52,7 +52,8 @@ public static function schema(FieldStorageDefinitionInterface $field_definition)
     return array(
       'columns' => array(
         'value' => array(
-          'type' => 'text',
+          'type' => 'varchar',
+          'length' => (int) $field_definition->getSetting('max_length'),
           'not null' => TRUE,
         ),
       ),
diff --git a/core/modules/aggregator/aggregator.install b/core/modules/aggregator/aggregator.install
index e4bef0ebdb19..2b755e1e5f8a 100644
--- a/core/modules/aggregator/aggregator.install
+++ b/core/modules/aggregator/aggregator.install
@@ -22,179 +22,3 @@ function aggregator_requirements($phase) {
   }
   return $requirements;
 }
-
-/**
- * Implements hook_schema().
- */
-function aggregator_schema() {
-  $schema['aggregator_feed'] = array(
-    'description' => 'Stores feeds to be parsed by the aggregator.',
-    'fields' => array(
-      'fid' => array(
-        'type' => 'serial',
-        'not null' => TRUE,
-        'description' => 'Primary Key: Unique feed ID.',
-      ),
-      'uuid' => array(
-        'description' => 'Unique Key: Universally unique identifier for this entity.',
-        'type' => 'varchar',
-        'length' => 128,
-        'not null' => FALSE,
-      ),
-      'title' => array(
-        'type' => 'varchar',
-        'length' => 255,
-        'not null' => TRUE,
-        'default' => '',
-        'description' => 'Title of the feed.',
-      ),
-      'langcode' => array(
-        'description' => 'The {language}.langcode of this feed.',
-        'type' => 'varchar',
-        'length' => 12,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-      'url' => array(
-        'type' => 'text',
-        'not null' => TRUE,
-        'description' => 'URL to the feed.',
-      ),
-      'refresh' => array(
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 0,
-        'description' => 'How often to check for new feed items, in seconds.',
-      ),
-      'checked' => array(
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 0,
-        'description' => 'Last time feed was checked for new items, as Unix timestamp.',
-      ),
-      'queued' => array(
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 0,
-        'description' => 'Time when this feed was queued for refresh, 0 if not queued.',
-      ),
-      'link' => array(
-        'type' => 'text',
-        'not null' => TRUE,
-        'description' => 'The parent website of the feed; comes from the <link> element in the feed.',
-      ),
-      'description' => array(
-        'type' => 'text',
-        'not null' => TRUE,
-        'size' => 'big',
-        'description' => "The parent website's description; comes from the <description> element in the feed.",
-      ),
-      'image' => array(
-        'type' => 'text',
-        'not null' => TRUE,
-        'size' => 'big',
-        'description' => 'An image representing the feed.',
-      ),
-      'hash' => array(
-        'type' => 'varchar',
-        'length' => 64,
-        'not null' => TRUE,
-        'default' => '',
-        'description' => 'Calculated hash of the feed data, used for validating cache.',
-      ),
-      'etag' => array(
-        'type' => 'varchar',
-        'length' => 255,
-        'not null' => TRUE,
-        'default' => '',
-        'description' => 'Entity tag HTTP response header, used for validating cache.',
-      ),
-      'modified' => array(
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 0,
-        'description' => 'When the feed was last modified, as a Unix timestamp.',
-      ),
-    ),
-    'primary key' => array('fid'),
-    'indexes' => array(
-      'url'  => array(array('url', 255)),
-      'queued' => array('queued'),
-    ),
-    'unique keys' => array(
-      'title' => array('title'),
-    ),
-  );
-
-  $schema['aggregator_item'] = array(
-    'description' => 'Stores the individual items imported from feeds.',
-    'fields' => array(
-      'iid'  => array(
-        'type' => 'serial',
-        'not null' => TRUE,
-        'description' => 'Primary Key: Unique ID for feed item.',
-      ),
-      'fid' => array(
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 0,
-        'description' => 'The {aggregator_feed}.fid to which this item belongs.',
-      ),
-      'title' => array(
-        'type' => 'varchar',
-        'length' => 255,
-        'not null' => TRUE,
-        'default' => '',
-        'description' => 'Title of the feed item.',
-      ),
-      'langcode' => array(
-        'description' => 'The {language}.langcode of this feed item.',
-        'type' => 'varchar',
-        'length' => 12,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-      'link' => array(
-        'type' => 'text',
-        'not null' => TRUE,
-        'description' => 'Link to the feed item.',
-      ),
-      'author' => array(
-        'type' => 'varchar',
-        'length' => 255,
-        'not null' => TRUE,
-        'default' => '',
-        'description' => 'Author of the feed item.',
-      ),
-      'description' => array(
-        'type' => 'text',
-        'not null' => TRUE,
-        'size' => 'big',
-        'description' => 'Body of the feed item.',
-      ),
-      'timestamp' => array(
-        'type' => 'int',
-        'not null' => FALSE,
-        'description' => 'Posted date of the feed item, as a Unix timestamp.',
-      ),
-      'guid' => array(
-        'type' => 'text',
-        'not null' => TRUE,
-        'description' => 'Unique identifier for the feed item.',
-      )
-    ),
-    'primary key' => array('iid'),
-    'indexes' => array(
-      'fid' => array('fid'),
-      'timestamp' => array('timestamp'),
-    ),
-    'foreign keys' => array(
-      'aggregator_feed' => array(
-        'table' => 'aggregator_feed',
-        'columns' => array('fid' => 'fid'),
-      ),
-    ),
-  );
-
-  return $schema;
-}
diff --git a/core/modules/aggregator/src/Entity/Feed.php b/core/modules/aggregator/src/Entity/Feed.php
index 24430b9dd532..4222152ba2be 100644
--- a/core/modules/aggregator/src/Entity/Feed.php
+++ b/core/modules/aggregator/src/Entity/Feed.php
@@ -153,7 +153,6 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
       ->setLabel(t('URL'))
       ->setDescription(t('The fully-qualified URL of the feed.'))
       ->setRequired(TRUE)
-      ->setSetting('max_length', NULL)
       ->setDisplayOptions('form', array(
         'type' => 'uri',
         'weight' => -3,
@@ -176,11 +175,13 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
 
     $fields['checked'] = FieldDefinition::create('timestamp')
       ->setLabel(t('Checked'))
-      ->setDescription(t('Last time feed was checked for new items, as Unix timestamp.'));
+      ->setDescription(t('Last time feed was checked for new items, as Unix timestamp.'))
+      ->setSetting('default_value', 0);
 
     $fields['queued'] = FieldDefinition::create('timestamp')
       ->setLabel(t('Queued'))
-      ->setDescription(t('Time when this feed was queued for refresh, 0 if not queued.'));
+      ->setDescription(t('Time when this feed was queued for refresh, 0 if not queued.'))
+      ->setSetting('default_value', 0);
 
     $fields['link'] = FieldDefinition::create('uri')
       ->setLabel(t('Link'))
diff --git a/core/modules/aggregator/src/Entity/Item.php b/core/modules/aggregator/src/Entity/Item.php
index bb9e0aa34abc..162bb198ac70 100644
--- a/core/modules/aggregator/src/Entity/Item.php
+++ b/core/modules/aggregator/src/Entity/Item.php
@@ -71,8 +71,7 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
       ->setLabel(t('Author'))
       ->setDescription(t('The author of the feed item.'));
 
-    // @todo Convert to a text field in https://drupal.org/node/2149845.
-    $fields['description'] = FieldDefinition::create('string')
+    $fields['description'] = FieldDefinition::create('string_long')
       ->setLabel(t('Description'))
       ->setDescription(t('The body of the feed item.'));
 
@@ -81,7 +80,7 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
       ->setDescription(t('Posted date of the feed item, as a Unix timestamp.'));
 
     // @todo Convert to a real UUID field in https://drupal.org/node/2149851.
-    $fields['guid'] = FieldDefinition::create('string')
+    $fields['guid'] = FieldDefinition::create('string_long')
       ->setLabel(t('GUID'))
       ->setDescription(t('Unique identifier for the feed item.'));
 
diff --git a/core/modules/aggregator/src/FeedStorage.php b/core/modules/aggregator/src/FeedStorage.php
index 5824240d74c7..da784f5c4dc3 100644
--- a/core/modules/aggregator/src/FeedStorage.php
+++ b/core/modules/aggregator/src/FeedStorage.php
@@ -18,6 +18,29 @@
  */
 class FeedStorage extends ContentEntityDatabaseStorage implements FeedStorageInterface {
 
+  /**
+   * {@inheritdoc}
+   */
+  public function getSchema() {
+    $schema = parent::getSchema();
+
+    // Marking the respective fields as NOT NULL makes the indexes more
+    // performant.
+    $schema['aggregator_feed']['fields']['url']['not null'] = TRUE;
+    $schema['aggregator_feed']['fields']['queued']['not null'] = TRUE;
+    $schema['aggregator_feed']['fields']['title']['not null'] = TRUE;
+
+    $schema['aggregator_feed']['indexes'] += array(
+      'aggregator_feed__url'  => array(array('url', 255)),
+      'aggregator_feed__queued' => array('queued'),
+    );
+    $schema['aggregator_feed']['unique keys'] += array(
+      'aggregator_feed__title' => array('title'),
+    );
+
+    return $schema;
+  }
+
   /**
    * {@inheritdoc}
    */
diff --git a/core/modules/aggregator/src/ItemStorage.php b/core/modules/aggregator/src/ItemStorage.php
index bedea41700b2..f2b4aa683196 100644
--- a/core/modules/aggregator/src/ItemStorage.php
+++ b/core/modules/aggregator/src/ItemStorage.php
@@ -19,6 +19,29 @@
  */
 class ItemStorage extends ContentEntityDatabaseStorage implements ItemStorageInterface {
 
+  /**
+   * {@inheritdoc}
+   */
+  public function getSchema() {
+    $schema = parent::getSchema();
+
+    // Marking the respective fields as NOT NULL makes the indexes more
+    // performant.
+    $schema['aggregator_item']['fields']['timestamp']['not null'] = TRUE;
+
+    $schema['aggregator_item']['indexes'] += array(
+      'aggregator_item__timestamp' => array('timestamp'),
+    );
+    $schema['aggregator_item']['foreign keys'] += array(
+      'aggregator_item__aggregator_feed' => array(
+        'table' => 'aggregator_feed',
+        'columns' => array('fid' => 'fid'),
+      ),
+    );
+
+    return $schema;
+  }
+
   /**
    * {@inheritdoc}
    */
diff --git a/core/modules/aggregator/src/Tests/FeedParserTest.php b/core/modules/aggregator/src/Tests/FeedParserTest.php
index 96ee61fe53f7..5d4199f75ba0 100644
--- a/core/modules/aggregator/src/Tests/FeedParserTest.php
+++ b/core/modules/aggregator/src/Tests/FeedParserTest.php
@@ -87,7 +87,7 @@ function testHtmlEntitiesSample() {
   function testRedirectFeed() {
     // Simulate a typo in the URL to force a curl exception.
     $invalid_url = url('aggregator/redirect', array('absolute' => TRUE));
-    $feed = entity_create('aggregator_feed', array('url' => $invalid_url));
+    $feed = entity_create('aggregator_feed', array('url' => $invalid_url, 'title' => $this->randomName()));
     $feed->save();
     $feed->refreshItems();
 
diff --git a/core/modules/aggregator/src/Tests/Views/IntegrationTest.php b/core/modules/aggregator/src/Tests/Views/IntegrationTest.php
index 3f4d7b54271a..bd8f17c845b2 100644
--- a/core/modules/aggregator/src/Tests/Views/IntegrationTest.php
+++ b/core/modules/aggregator/src/Tests/Views/IntegrationTest.php
@@ -21,7 +21,7 @@ class IntegrationTest extends ViewUnitTestBase {
    *
    * @var array
    */
-  public static $modules = array('aggregator', 'aggregator_test_views', 'system', 'entity', 'field');
+  public static $modules = array('aggregator', 'aggregator_test_views', 'system', 'entity', 'field', 'options');
 
   /**
    * Views used by this test.
@@ -55,7 +55,8 @@ public static function getInfo() {
   protected function setUp() {
     parent::setUp();
 
-    $this->installSchema('aggregator', array('aggregator_item', 'aggregator_feed'));
+    $this->installEntitySchema('aggregator_item');
+    $this->installEntitySchema('aggregator_feed');
 
     ViewTestData::createTestViews(get_class($this), array('aggregator_test_views'));
 
diff --git a/core/modules/block/custom_block/custom_block.install b/core/modules/block/custom_block/custom_block.install
deleted file mode 100644
index 6f85a6a9415a..000000000000
--- a/core/modules/block/custom_block/custom_block.install
+++ /dev/null
@@ -1,125 +0,0 @@
-<?php
-
-/**
- * @file
- * Install, update and uninstall functions for the custom block module.
- */
-
-use Drupal\Core\Entity\EntityTypeInterface;
-
-/**
- * Implements hook_schema().
- */
-function custom_block_schema() {
-  $schema = array();
-  $schema['custom_block'] = array(
-    'description' => 'Stores contents of custom-made blocks.',
-    'fields' => array(
-      'id' => array(
-        'type' => 'serial',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'description' => "The block's {custom_block}.id.",
-      ),
-      'uuid' => array(
-        'description' => 'Unique Key: Universally unique identifier for this entity.',
-        'type' => 'varchar',
-        'length' => 128,
-        'not null' => FALSE,
-      ),
-      'info' => array(
-        'type' => 'varchar',
-        'length' => 128,
-        'not null' => TRUE,
-        'default' => '',
-        'description' => 'Block description.',
-      ),
-      // Defaults to NULL in order to avoid a brief period of potential
-      // deadlocks on the index.
-      'revision_id' => array(
-        'description' => 'The current {block_custom_revision}.revision_id version identifier.',
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => FALSE,
-        'default' => NULL,
-      ),
-      'type' => array(
-        'description' => 'The type of this custom block.',
-        'type' => 'varchar',
-        'length' => EntityTypeInterface::BUNDLE_MAX_LENGTH,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-      'changed' => array(
-        'description' => 'The Unix timestamp when the custom block was most recently saved.',
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 0,
-      ),
-      'langcode' => array(
-        'description' => 'The {language}.langcode of this node.',
-        'type' => 'varchar',
-        'length' => 12,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-    ),
-    'primary key' => array('id'),
-    'indexes' => array(
-      'block_custom_type' => array('type'),
-    ),
-    'unique keys' => array(
-      'revision_id' => array('revision_id'),
-      'uuid' => array('uuid'),
-      'info' => array('info'),
-    ),
-    'foreign keys' => array(
-      'custom_block_revision' => array(
-        'table' => 'custom_block_revision',
-        'columns' => array('revision_id' => 'revision_id'),
-      ),
-    ),
-  );
-
-  $schema['custom_block_revision'] = array(
-    'description' => 'Stores contents of custom-made blocks.',
-    'fields' => array(
-      'id' => array(
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'default' => 0,
-        'description' => "The block's {custom_block}.id.",
-      ),
-      // Defaults to NULL in order to avoid a brief period of potential
-      // deadlocks on the index.
-      'revision_id' => array(
-        'description' => 'The current version identifier.',
-        'type' => 'serial',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-      ),
-      'log' => array(
-        'description' => 'The log entry explaining the changes in this version.',
-        'type' => 'text',
-        'not null' => TRUE,
-        'size' => 'big',
-      ),
-      'info' => array(
-        'type' => 'varchar',
-        'length' => 128,
-        'not null' => TRUE,
-        'default' => '',
-        'description' => 'Block description.',
-      ),
-      'changed' => array(
-        'description' => 'The Unix timestamp when the version was most recently saved.',
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 0,
-      ),
-    ),
-    'primary key' => array('revision_id'),
-  );
-  return $schema;
-}
diff --git a/core/modules/block/custom_block/lib/Drupal/custom_block/CustomBlockStorage.php b/core/modules/block/custom_block/lib/Drupal/custom_block/CustomBlockStorage.php
new file mode 100644
index 000000000000..b7b8711bdc99
--- /dev/null
+++ b/core/modules/block/custom_block/lib/Drupal/custom_block/CustomBlockStorage.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\custom_block\CustomBlockStorage.
+ */
+
+namespace Drupal\custom_block;
+
+use Drupal\Core\Entity\ContentEntityDatabaseStorage;
+
+/**
+ * Provides storage for the 'custom_block' entity type.
+ */
+class CustomBlockStorage extends ContentEntityDatabaseStorage {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getSchema() {
+    $schema = parent::getSchema();
+
+    // Marking the respective fields as NOT NULL makes the indexes more
+    // performant.
+    $schema['custom_block']['fields']['info']['not null'] = TRUE;
+
+    $schema['custom_block']['unique keys'] += array(
+      'custom_block__info' => array('info'),
+    );
+
+    return $schema;
+  }
+
+}
diff --git a/core/modules/block/custom_block/src/Entity/CustomBlock.php b/core/modules/block/custom_block/src/Entity/CustomBlock.php
index 71913b7ba60b..585026e3998c 100644
--- a/core/modules/block/custom_block/src/Entity/CustomBlock.php
+++ b/core/modules/block/custom_block/src/Entity/CustomBlock.php
@@ -21,6 +21,7 @@
  *   label = @Translation("Custom Block"),
  *   bundle_label = @Translation("Custom Block type"),
  *   controllers = {
+ *     "storage" = "Drupal\custom_block\CustomBlockStorage",
  *     "access" = "Drupal\custom_block\CustomBlockAccessController",
  *     "list_builder" = "Drupal\custom_block\CustomBlockListBuilder",
  *     "view_builder" = "Drupal\custom_block\CustomBlockViewBuilder",
@@ -186,7 +187,7 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
       ->setSetting('target_type', 'custom_block_type')
       ->setSetting('max_length', EntityTypeInterface::BUNDLE_MAX_LENGTH);
 
-    $fields['log'] = FieldDefinition::create('string')
+    $fields['log'] = FieldDefinition::create('string_long')
       ->setLabel(t('Revision log message'))
       ->setDescription(t('The revision log message.'))
       ->setRevisionable(TRUE);
diff --git a/core/modules/comment/comment.install b/core/modules/comment/comment.install
index 3bfbcd0ba273..0c35aaecc37d 100644
--- a/core/modules/comment/comment.install
+++ b/core/modules/comment/comment.install
@@ -32,152 +32,6 @@ function comment_install() {
  * Implements hook_schema().
  */
 function comment_schema() {
-  $schema['comment'] = array(
-    'description' => 'Stores comments and associated data.',
-    'fields' => array(
-      'cid' => array(
-        'type' => 'serial',
-        'not null' => TRUE,
-        'description' => 'Primary Key: Unique comment ID.',
-      ),
-      'uuid' => array(
-        'description' => 'Unique Key: Universally unique identifier for this entity.',
-        'type' => 'varchar',
-        'length' => 128,
-        'not null' => FALSE,
-      ),
-      'pid' => array(
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 0,
-        'description' => 'The {comment}.cid to which this comment is a reply. If set to 0, this comment is not a reply to an existing comment.',
-      ),
-      'entity_id' => array(
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'default' => 0,
-        'description' => 'The entity_id of the entity to which this comment is a reply.',
-      ),
-      'entity_type' => array(
-        'type' => 'varchar',
-        'not null' => TRUE,
-        'default' => 'node',
-        'length' => 255,
-        'description' => 'The entity_type of the entity to which this comment is a reply.',
-      ),
-      'field_id' => array(
-        'type' => 'varchar',
-        'not null' => TRUE,
-        'default' => 'node.comment',
-        'length' => 255,
-        'description' => 'The field_id of the field that was used to add this comment.',
-      ),
-      'uid' => array(
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'default' => 0,
-        'description' => 'The {users}.uid who authored the comment. If set to 0, this comment was created by an anonymous user.',
-      ),
-      'subject' => array(
-        'type' => 'varchar',
-        'length' => 64,
-        'not null' => TRUE,
-        'default' => '',
-        'description' => 'The comment title.',
-      ),
-      'hostname' => array(
-        'type' => 'varchar',
-        'length' => 128,
-        'not null' => TRUE,
-        'default' => '',
-        'description' => "The author's host name.",
-      ),
-      'created' => array(
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 0,
-        'description' => 'The time that the comment was created, as a Unix timestamp.',
-      ),
-      'changed' => array(
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 0,
-        'description' => 'The time that the comment was last edited, as a Unix timestamp.',
-      ),
-      'status' => array(
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'default' => 1,
-        'size' => 'tiny',
-        'description' => 'The published status of a comment. (0 = Not Published, 1 = Published)',
-      ),
-      'thread' => array(
-        'type' => 'varchar',
-        'length' => 255,
-        'not null' => TRUE,
-        'description' => "The alphadecimal representation of the comment's place in a thread, consisting of a base 36 string prefixed by an integer indicating its length.",
-      ),
-      'name' => array(
-        'type' => 'varchar',
-        'length' => 60,
-        'not null' => FALSE,
-        'description' => "The comment author's name. Uses {users}.name if the user is logged in, otherwise uses the value typed into the comment form.",
-      ),
-      'mail' => array(
-        'type' => 'varchar',
-        'length' => 64,
-        'not null' => FALSE,
-        'description' => "The comment author's e-mail address from the comment form, if user is anonymous, and the 'Anonymous users may/must leave their contact information' setting is turned on.",
-      ),
-      'homepage' => array(
-        'type' => 'varchar',
-        'length' => 255,
-        'not null' => FALSE,
-        'description' => "The comment author's home page address from the comment form, if user is anonymous, and the 'Anonymous users may/must leave their contact information' setting is turned on.",
-      ),
-      'langcode' => array(
-        'description' => 'The {language}.langcode of this comment.',
-        'type' => 'varchar',
-        'length' => 12,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-    ),
-    'indexes' => array(
-      'comment_status_pid' => array('pid', 'status'),
-      'comment_num_new' => array(
-        'entity_id',
-        array('entity_type', 32),
-        array('field_id', 32),
-        'status',
-        'created',
-        'cid',
-        'thread',
-      ),
-      'comment_uid' => array('uid'),
-      'comment_entity_langcode' => array(
-        'entity_id',
-        array('entity_type', 32),
-        array('field_id', 32),
-        'langcode',
-      ),
-      'comment_created' => array('created'),
-    ),
-    'primary key' => array('cid'),
-    'unique keys' => array(
-      'uuid' => array('uuid'),
-    ),
-    'foreign keys' => array(
-      'comment_author' => array(
-        'table' => 'users',
-        'columns' => array('uid' => 'uid'),
-      ),
-    ),
-  );
-
   $schema['comment_entity_statistics'] = array(
     'description' => 'Maintains statistics of entity and comments posts to show "new" and "updated" flags.',
     'fields' => array(
diff --git a/core/modules/comment/src/CommentStorage.php b/core/modules/comment/src/CommentStorage.php
index 88a1bd497801..5526d2be0640 100644
--- a/core/modules/comment/src/CommentStorage.php
+++ b/core/modules/comment/src/CommentStorage.php
@@ -127,4 +127,50 @@ public function getChildCids(array $comments) {
       ->fetchCol();
   }
 
+  /**
+   * {@inheritdoc}
+   */
+  public function getSchema() {
+    $schema = parent::getSchema();
+
+    // Marking the respective fields as NOT NULL makes the indexes more
+    // performant.
+    $schema['comment']['fields']['pid']['not null'] = TRUE;
+    $schema['comment']['fields']['status']['not null'] = TRUE;
+    $schema['comment']['fields']['entity_id']['not null'] = TRUE;
+    $schema['comment']['fields']['field_id']['not null'] = TRUE;
+    $schema['comment']['fields']['created']['not null'] = TRUE;
+    $schema['comment']['fields']['thread']['not null'] = TRUE;
+
+    unset($schema['comment']['indexes']['field__pid']);
+    unset($schema['comment']['indexes']['field__entity_id']);
+    $schema['comment']['indexes'] += array(
+      'comment__status_pid' => array('pid', 'status'),
+      'comment__num_new' => array(
+        'entity_id',
+        array('entity_type', 32),
+        array('field_id', 32),
+        'status',
+        'created',
+        'cid',
+        'thread',
+      ),
+      'comment__entity_langcode' => array(
+        'entity_id',
+        array('entity_type', 32),
+        array('field_id', 32),
+        'langcode',
+      ),
+      'comment__created' => array('created'),
+    );
+    $schema['comment']['foreign keys'] += array(
+      'comment__author' => array(
+        'table' => 'users',
+        'columns' => array('uid' => 'uid'),
+      ),
+    );
+
+    return $schema;
+  }
+
 }
diff --git a/core/modules/comment/src/Entity/Comment.php b/core/modules/comment/src/Entity/Comment.php
index de103469219f..9b4707f0b9f2 100644
--- a/core/modules/comment/src/Entity/Comment.php
+++ b/core/modules/comment/src/Entity/Comment.php
@@ -273,7 +273,8 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
 
     $fields['status'] = FieldDefinition::create('boolean')
       ->setLabel(t('Publishing status'))
-      ->setDescription(t('A boolean indicating whether the comment is published.'));
+      ->setDescription(t('A boolean indicating whether the comment is published.'))
+      ->setSetting('default_value', TRUE);
 
     $fields['thread'] = FieldDefinition::create('string')
       ->setLabel(t('Thread place'))
diff --git a/core/modules/comment/src/Tests/CommentDefaultFormatterCacheTagsTest.php b/core/modules/comment/src/Tests/CommentDefaultFormatterCacheTagsTest.php
index 3fe2a3f3974e..ff8c05a58b93 100644
--- a/core/modules/comment/src/Tests/CommentDefaultFormatterCacheTagsTest.php
+++ b/core/modules/comment/src/Tests/CommentDefaultFormatterCacheTagsTest.php
@@ -47,7 +47,8 @@ public function setUp() {
     $current_user->setAccount($this->createUser(array(), array('access comments')));
 
     // Install tables and config needed to render comments.
-    $this->installSchema('comment', array('comment', 'comment_entity_statistics'));
+    $this->installSchema('comment', array('comment_entity_statistics'));
+    $this->installEntitySchema('comment');
     $this->installConfig(array('system', 'filter'));
 
     // Comment rendering generates links, so build the router.
diff --git a/core/modules/comment/src/Tests/CommentValidationTest.php b/core/modules/comment/src/Tests/CommentValidationTest.php
index 03a0e82decee..b56ed6b10923 100644
--- a/core/modules/comment/src/Tests/CommentValidationTest.php
+++ b/core/modules/comment/src/Tests/CommentValidationTest.php
@@ -38,7 +38,8 @@ public static function getInfo() {
    */
   public function setUp() {
     parent::setUp();
-    $this->installSchema('node', array('node', 'node_field_data', 'node_field_revision', 'node_revision'));
+    $this->installEntitySchema('node');
+    $this->installEntitySchema('comment');
     $this->installSchema('comment', array('comment_entity_statistics'));
   }
 
diff --git a/core/modules/config/src/Tests/ConfigImportRecreateTest.php b/core/modules/config/src/Tests/ConfigImportRecreateTest.php
index 3ce6b125a955..9afec8cfc08b 100644
--- a/core/modules/config/src/Tests/ConfigImportRecreateTest.php
+++ b/core/modules/config/src/Tests/ConfigImportRecreateTest.php
@@ -29,7 +29,7 @@ class ConfigImportRecreateTest extends DrupalUnitTestBase {
    *
    * @var array
    */
-  public static $modules = array('system', 'entity', 'field', 'text', 'node');
+  public static $modules = array('system', 'entity', 'field', 'text', 'user', 'node');
 
   public static function getInfo() {
     return array(
@@ -42,7 +42,7 @@ public static function getInfo() {
   public function setUp() {
     parent::setUp();
 
-    $this->installSchema('node', 'node');
+    $this->installEntitySchema('node');
 
     $this->copyConfig($this->container->get('config.storage'), $this->container->get('config.storage.staging'));
 
diff --git a/core/modules/config/src/Tests/ConfigImportRenameValidationTest.php b/core/modules/config/src/Tests/ConfigImportRenameValidationTest.php
index fbffae7aa1d7..7e8024ac7522 100644
--- a/core/modules/config/src/Tests/ConfigImportRenameValidationTest.php
+++ b/core/modules/config/src/Tests/ConfigImportRenameValidationTest.php
@@ -32,7 +32,7 @@ class ConfigImportRenameValidationTest extends DrupalUnitTestBase {
    *
    * @var array
    */
-  public static $modules = array('system', 'node', 'field', 'text', 'entity', 'config_test');
+  public static $modules = array('system', 'user', 'node', 'field', 'text', 'entity', 'config_test');
 
   /**
    * {@inheritdoc}
@@ -51,7 +51,8 @@ public static function getInfo() {
   public function setUp() {
     parent::setUp();
 
-    $this->installSchema('node', 'node');
+    $this->installEntitySchema('user');
+    $this->installEntitySchema('node');
 
     // Set up the ConfigImporter object for testing.
     $storage_comparer = new StorageComparer(
diff --git a/core/modules/editor/src/Tests/EditorFileUsageTest.php b/core/modules/editor/src/Tests/EditorFileUsageTest.php
index 3be50ec45f37..184d84992cc9 100644
--- a/core/modules/editor/src/Tests/EditorFileUsageTest.php
+++ b/core/modules/editor/src/Tests/EditorFileUsageTest.php
@@ -31,8 +31,10 @@ public static function getInfo() {
 
   public function setUp() {
     parent::setUp();
-    $this->installSchema('node', array('node', 'node_access', 'node_field_data', 'node_field_revision', 'node_revision'));
-    $this->installSchema('file', array('file_managed', 'file_usage'));
+    $this->installEntitySchema('node');
+    $this->installEntitySchema('file');
+    $this->installSchema('node', array('node_access'));
+    $this->installSchema('file', array('file_usage'));
 
     // Add text formats.
     $filtered_html_format = entity_create('filter_format', array(
diff --git a/core/modules/entity/src/Tests/EntityDisplayTest.php b/core/modules/entity/src/Tests/EntityDisplayTest.php
index 77745f2a62b6..250f5e013612 100644
--- a/core/modules/entity/src/Tests/EntityDisplayTest.php
+++ b/core/modules/entity/src/Tests/EntityDisplayTest.php
@@ -268,7 +268,7 @@ public function testBaseFieldComponent() {
    */
   public function testRenameDeleteBundle() {
     $this->enableModules(array('field_test', 'node', 'system', 'text'));
-    $this->installSchema('node', array('node'));
+    $this->installEntitySchema('node');
 
     // Create a node bundle, display and form display object.
     entity_create('node_type', array('type' => 'article'))->save();
diff --git a/core/modules/entity_reference/src/Tests/EntityReferenceFieldTest.php b/core/modules/entity_reference/src/Tests/EntityReferenceFieldTest.php
index bde0b2c9ddc2..b3905bceb067 100644
--- a/core/modules/entity_reference/src/Tests/EntityReferenceFieldTest.php
+++ b/core/modules/entity_reference/src/Tests/EntityReferenceFieldTest.php
@@ -76,7 +76,7 @@ public static function getInfo() {
   public function setUp() {
     parent::setUp();
 
-    $this->installSchema('entity_test', array('entity_test_rev', 'entity_test_rev_revision'));
+    $this->installEntitySchema('entity_test_rev');
 
     // Setup a field and instance.
     entity_reference_create_instance(
diff --git a/core/modules/entity_reference/src/Tests/EntityReferenceItemTest.php b/core/modules/entity_reference/src/Tests/EntityReferenceItemTest.php
index 8c33d47d9361..0586e7cc098b 100644
--- a/core/modules/entity_reference/src/Tests/EntityReferenceItemTest.php
+++ b/core/modules/entity_reference/src/Tests/EntityReferenceItemTest.php
@@ -52,8 +52,7 @@ public static function getInfo() {
   public function setUp() {
     parent::setUp();
 
-    $this->installSchema('taxonomy', 'taxonomy_term_data');
-    $this->installSchema('taxonomy', 'taxonomy_term_hierarchy');
+    $this->installEntitySchema('taxonomy_term');
 
     $this->vocabulary = entity_create('taxonomy_vocabulary', array(
       'name' => $this->randomName(),
diff --git a/core/modules/field/src/Tests/FieldAttachOtherTest.php b/core/modules/field/src/Tests/FieldAttachOtherTest.php
index a74893994873..31ba14380eff 100644
--- a/core/modules/field/src/Tests/FieldAttachOtherTest.php
+++ b/core/modules/field/src/Tests/FieldAttachOtherTest.php
@@ -38,7 +38,7 @@ public static function getInfo() {
 
   public function setUp() {
     parent::setUp();
-    $this->installSchema('entity_test', array('entity_test_rev', 'entity_test_rev_revision'));
+    $this->installEntitySchema('entity_test_rev');
     $this->createFieldWithInstance();
   }
 
diff --git a/core/modules/field/src/Tests/FieldAttachStorageTest.php b/core/modules/field/src/Tests/FieldAttachStorageTest.php
index ec805f2e67ec..129a58f31117 100644
--- a/core/modules/field/src/Tests/FieldAttachStorageTest.php
+++ b/core/modules/field/src/Tests/FieldAttachStorageTest.php
@@ -37,7 +37,7 @@ public static function getInfo() {
 
   public function setUp() {
     parent::setUp();
-    $this->installSchema('entity_test', array('entity_test_rev', 'entity_test_rev_revision'));
+    $this->installEntitySchema('entity_test_rev');
   }
 
   /**
diff --git a/core/modules/field/src/Tests/FieldUnitTestBase.php b/core/modules/field/src/Tests/FieldUnitTestBase.php
index 5717a2313d4f..457a09f1556c 100644
--- a/core/modules/field/src/Tests/FieldUnitTestBase.php
+++ b/core/modules/field/src/Tests/FieldUnitTestBase.php
@@ -36,9 +36,9 @@ abstract class FieldUnitTestBase extends DrupalUnitTestBase {
    */
   function setUp() {
     parent::setUp();
-    $this->installSchema('entity_test', 'entity_test');
+    $this->installEntitySchema('entity_test');
+    $this->installEntitySchema('user');
     $this->installSchema('system', array('sequences'));
-    $this->installSchema('user', array('users', 'users_roles'));
 
     // Set default storage backend and configure the theme system.
     $this->installConfig(array('field', 'system'));
diff --git a/core/modules/field/src/Tests/TranslationWebTest.php b/core/modules/field/src/Tests/TranslationWebTest.php
index ba00c740b179..fb52e72d9ae2 100644
--- a/core/modules/field/src/Tests/TranslationWebTest.php
+++ b/core/modules/field/src/Tests/TranslationWebTest.php
@@ -33,7 +33,7 @@ class TranslationWebTest extends FieldTestBase {
    *
    * @var string
    */
-  protected $entity_type = 'entity_test_rev';
+  protected $entity_type = 'entity_test_mulrev';
 
   /**
    * The field to use in this test.
@@ -78,7 +78,7 @@ function setUp() {
       'bundle' => $this->entity_type,
     );
     entity_create('field_instance_config', $instance)->save();
-    $this->instance = entity_load('field_instance_config', 'entity_test.' . $instance['bundle'] . '.' . $this->field_name);
+    $this->instance = entity_load('field_instance_config', $this->entity_type . '.' . $instance['bundle'] . '.' . $this->field_name);
 
     entity_get_form_display($this->entity_type, $this->entity_type, 'default')
       ->setComponent($this->field_name)
diff --git a/core/modules/file/file.install b/core/modules/file/file.install
index 6bbed7915888..8d13c03ddfe9 100644
--- a/core/modules/file/file.install
+++ b/core/modules/file/file.install
@@ -9,105 +9,6 @@
  * Implements hook_schema().
  */
 function file_schema() {
-  $schema['file_managed'] = array(
-    'description' => 'Stores information for uploaded files.',
-    'fields' => array(
-      'fid' => array(
-        'description' => 'File ID.',
-        'type' => 'serial',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-      ),
-      'uuid' => array(
-        'description' => 'Unique Key: Universally unique identifier for this entity.',
-        'type' => 'varchar',
-        'length' => 128,
-        'not null' => FALSE,
-      ),
-      'uid' => array(
-        'description' => 'The {users}.uid of the user who is associated with the file.',
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'default' => 0,
-      ),
-      'filename' => array(
-        'description' => 'Name of the file with no path components. This may differ from the basename of the URI if the file is renamed to avoid overwriting an existing file.',
-        'type' => 'varchar',
-        'length' => 255,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-      'uri' => array(
-        'description' => 'The URI to access the file (either local or remote).',
-        'type' => 'varchar',
-        'length' => 255,
-        'not null' => TRUE,
-        'default' => '',
-        'binary' => TRUE,
-      ),
-      'langcode' => array(
-        'description' => 'The {language}.langcode of this file.',
-        'type' => 'varchar',
-        'length' => 12,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-      'filemime' => array(
-        'description' => "The file's MIME type.",
-        'type' => 'varchar',
-        'length' => 255,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-      'filesize' => array(
-        'description' => 'The size of the file in bytes.',
-        'type' => 'int',
-        'size' => 'big',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'default' => 0,
-      ),
-      'status' => array(
-        'description' => 'A field indicating the status of the file. Two status are defined in core: temporary (0) and permanent (1). Temporary files older than system.file.temporary_maximum_age will be removed during a cron run.',
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 0,
-        'size' => 'tiny',
-      ),
-      'created' => array(
-        'description' => 'UNIX timestamp for when the file added.',
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'default' => 0,
-      ),
-      'changed' => array(
-        'description' => 'UNIX timestamp for when the file was last changed.',
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'default' => 0,
-      ),
-    ),
-    'indexes' => array(
-      'uid' => array('uid'),
-      'status' => array('status'),
-      'changed' => array('changed'),
-    ),
-    'unique keys' => array(
-      'uuid' => array('uuid'),
-      'uri' => array('uri'),
-    ),
-    'primary key' => array('fid'),
-    'foreign keys' => array(
-      'file_owner' => array(
-        'table' => 'users',
-        'columns' => array('uid' => 'uid'),
-      ),
-    ),
-  );
-
   $schema['file_usage'] = array(
     'description' => 'Track where a file is used.',
     'fields' => array(
diff --git a/core/modules/file/src/Entity/File.php b/core/modules/file/src/Entity/File.php
index 39f27d67ef7b..8564127649c4 100644
--- a/core/modules/file/src/Entity/File.php
+++ b/core/modules/file/src/Entity/File.php
@@ -258,11 +258,12 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
     $fields['filesize'] = FieldDefinition::create('integer')
       ->setLabel(t('File size'))
       ->setDescription(t('The size of the file in bytes.'))
-      ->setSetting('unsigned', TRUE);
+      ->setSetting('unsigned', TRUE)
+      ->setSetting('size', 'big');
 
-    $fields['status'] = FieldDefinition::create('integer')
+    $fields['status'] = FieldDefinition::create('boolean')
       ->setLabel(t('Status'))
-      ->setDescription(t('The status of the file, temporary (0) and permanent (1).'));
+      ->setDescription(t('The status of the file, temporary (FALSE) and permanent (TRUE).'));
 
     $fields['created'] = FieldDefinition::create('created')
       ->setLabel(t('Created'))
diff --git a/core/modules/file/src/FileStorage.php b/core/modules/file/src/FileStorage.php
index 90d4bb0865fb..4b30ad6a9586 100644
--- a/core/modules/file/src/FileStorage.php
+++ b/core/modules/file/src/FileStorage.php
@@ -36,6 +36,35 @@ public function retrieveTemporaryFiles() {
     return $this->database->query('SELECT fid FROM {' . $this->entityType->getBaseTable() . '} WHERE status <> :permanent AND changed < :changed', array(
       ':permanent' => FILE_STATUS_PERMANENT,
       ':changed' => REQUEST_TIME - \Drupal::config('system.file')->get('temporary_maximum_age'),
-    ));
+    ))->fetchCol();
   }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getSchema() {
+    $schema = parent::getSchema();
+
+    // Marking the respective fields as NOT NULL makes the indexes more
+    // performant.
+    $schema['file_managed']['fields']['status']['not null'] = TRUE;
+    $schema['file_managed']['fields']['changed']['not null'] = TRUE;
+    $schema['file_managed']['fields']['uri']['not null'] = TRUE;
+
+    // @todo There should be a 'binary' field type or setting.
+    $schema['file_managed']['fields']['uri']['binary'] = TRUE;
+    $schema['file_managed']['indexes'] += array(
+      'file__status' => array('status'),
+      'file__changed' => array('changed'),
+    );
+    $schema['file_managed']['unique keys'] += array(
+      // FIXME We have an index size of 255, but the max URI length is 2048 so
+      // this might now always work. Should we replace this with a regular
+      // index?
+      'file__uri' => array(array('uri', 255)),
+    );
+
+    return $schema;
+  }
+
 }
diff --git a/core/modules/file/src/FileStorageInterface.php b/core/modules/file/src/FileStorageInterface.php
index a856b336656a..14bdc62797ab 100644
--- a/core/modules/file/src/FileStorageInterface.php
+++ b/core/modules/file/src/FileStorageInterface.php
@@ -35,8 +35,8 @@ public function spaceUsed($uid = NULL, $status = FILE_STATUS_PERMANENT);
    * Get files older than the temporary maximum age,
    * \Drupal::config('system.file')->get('temporary_maximum_age').
    *
-   *  @return array
-   *    A list of files to be deleted.
+   *  @return int[]
+   *    A list of file IDs of the files to be deleted.
    */
   public function retrieveTemporaryFiles();
 
diff --git a/core/modules/file/src/Tests/FileItemTest.php b/core/modules/file/src/Tests/FileItemTest.php
index 0f40a14995b3..57b908a71ab6 100644
--- a/core/modules/file/src/Tests/FileItemTest.php
+++ b/core/modules/file/src/Tests/FileItemTest.php
@@ -42,8 +42,8 @@ public static function getInfo() {
   public function setUp() {
     parent::setUp();
 
-    $this->installSchema('file', 'file_managed');
-    $this->installSchema('file', 'file_usage');
+    $this->installEntitySchema('file');
+    $this->installSchema('file', array('file_usage'));
 
     entity_create('field_config', array(
       'name' => 'file_test',
diff --git a/core/modules/file/src/Tests/FileManagedUnitTestBase.php b/core/modules/file/src/Tests/FileManagedUnitTestBase.php
index 8c83ac7ea43e..503490fd80df 100644
--- a/core/modules/file/src/Tests/FileManagedUnitTestBase.php
+++ b/core/modules/file/src/Tests/FileManagedUnitTestBase.php
@@ -29,8 +29,9 @@ function setUp() {
     file_test_reset();
 
     $this->installConfig(array('system'));
-    $this->installSchema('file', array('file_managed', 'file_usage'));
-    $this->installSchema('user', array('users', 'users_roles'));
+    $this->installEntitySchema('file');
+    $this->installEntitySchema('user');
+    $this->installSchema('file', array('file_usage'));
 
     // Make sure that a user with uid 1 exists, self::createFile() relies on
     // it.
diff --git a/core/modules/file/src/Tests/RetrieveTemporaryFilesTest.php b/core/modules/file/src/Tests/RetrieveTemporaryFilesTest.php
index eae640ca409d..12da31de2dc6 100644
--- a/core/modules/file/src/Tests/RetrieveTemporaryFilesTest.php
+++ b/core/modules/file/src/Tests/RetrieveTemporaryFilesTest.php
@@ -14,6 +14,20 @@
  */
 class RetrieveTemporaryFilesTest extends FileManagedUnitTestBase {
 
+  /**
+   * The file storage.
+   *
+   * @var \Drupal\file\FileStorageInterface
+   */
+  protected $fileStorage;
+
+  /**
+   * The temporary_maximum_age setting of files.
+   *
+   * @var int
+   */
+  protected $maxAge;
+
   /**
    * {@inheritdoc}
    */
@@ -31,27 +45,30 @@ public static function getInfo() {
   public function setUp() {
     parent::setUp();
 
-    $max_age = $this->container->get('config.factory')->get('system.file')->get('temporary_maximum_age');
-
+    $this->maxAge = $this->container->get('config.factory')->get('system.file')->get('temporary_maximum_age');
+    $this->fileStorage = $this->container->get('entity.manager')->getStorage('file');
     // Create an entry for the user with the date change.
-    $file_array = array('uid' => 2, 'uri' => 'public://example1.txt', 'status' => 2, 'changed' => REQUEST_TIME);
-    db_insert('file_managed')->fields($file_array)->execute();
-
-    // Create an entry for the user with an indication of the old date of the
-    // change.
-    $file_array = array('uid' => 2, 'uri' => 'public://example2.txt', 'status' => 2, 'changed' => REQUEST_TIME - ($max_age * 2));
-    db_insert('file_managed')->fields($file_array)->execute();
+    $file = $this->fileStorage->create(array('uid' => 2, 'uri' => $this->createUri(), 'status' => 2));
+    $file->save();
   }
 
   /**
    * Tests finding stale files.
    */
   function testRetrieveTemporaryFiles() {
-    $file_storage = $this->container->get('entity.manager')->getStorage('file');
+    $this->assertEqual($this->fileStorage->retrieveTemporaryFiles(), [], 'No file is to be deleted.');
 
-    $count_files = count($file_storage->retrieveTemporaryFiles()->fetchAssoc());
+    // Create an entry for the user with an indication of the old date of the
+    // change. As the changed field always saves the request time, we do have
+    // update it with a direct db query.
+    $file = $this->fileStorage->create(array('uid' => 2, 'uri' => $this->createUri(), 'status' => 2));
+    $file->save();
+    db_update('file_managed')
+      ->fields(array('changed' => REQUEST_TIME - ($this->maxAge * 2)))
+      ->condition('fid', $file->id())
+      ->execute();
 
-    $this->assertEqual($count_files, 1);
+    $this->assertEqual($this->fileStorage->retrieveTemporaryFiles(), [$file->id()], 'One file is to be deleted.');
   }
 
 }
diff --git a/core/modules/file/src/Tests/SpaceUsedTest.php b/core/modules/file/src/Tests/SpaceUsedTest.php
index a0c8e3350308..bfedef64c2c1 100644
--- a/core/modules/file/src/Tests/SpaceUsedTest.php
+++ b/core/modules/file/src/Tests/SpaceUsedTest.php
@@ -23,20 +23,40 @@ function setUp() {
     parent::setUp();
 
     // Create records for a couple of users with different sizes.
-    $file = array('uid' => 2, 'uri' => 'public://example1.txt', 'filesize' => 50, 'status' => FILE_STATUS_PERMANENT);
-    db_insert('file_managed')->fields($file)->execute();
-    $file = array('uid' => 2, 'uri' => 'public://example2.txt', 'filesize' => 20, 'status' => FILE_STATUS_PERMANENT);
-    db_insert('file_managed')->fields($file)->execute();
-    $file = array('uid' => 3, 'uri' => 'public://example3.txt', 'filesize' => 100, 'status' => FILE_STATUS_PERMANENT);
-    db_insert('file_managed')->fields($file)->execute();
-    $file = array('uid' => 3, 'uri' => 'public://example4.txt', 'filesize' => 200, 'status' => FILE_STATUS_PERMANENT);
-    db_insert('file_managed')->fields($file)->execute();
+    $this->createFileWithSize('public://example1.txt', 50, 2);
+    $this->createFileWithSize('public://example2.txt', 20, 2);
+    $this->createFileWithSize('public://example3.txt', 100, 3);
+    $this->createFileWithSize('public://example4.txt', 200, 3);
 
     // Now create some non-permanent files.
-    $file = array('uid' => 2, 'uri' => 'public://example5.txt', 'filesize' => 1, 'status' => 0);
-    db_insert('file_managed')->fields($file)->execute();
-    $file = array('uid' => 3, 'uri' => 'public://example6.txt', 'filesize' => 3, 'status' => 0);
-    db_insert('file_managed')->fields($file)->execute();
+    $this->createFileWithSize('public://example5.txt', 1, 2, 0);
+    $this->createFileWithSize('public://example6.txt', 3, 3, 0);
+  }
+
+  /**
+   * Creates a file with a given size.
+   *
+   * @param string $uri
+   *   URI of the file to create.
+   * @param int $size
+   *   Size of the file.
+   * @param int $uid
+   *   File owner ID.
+   * @param int $status
+   *   Whether the file should be permanent or temporary.
+   *
+   * @return \Drupal\Core\Entity\EntityInterface
+   *   The file entity.
+   */
+  protected function createFileWithSize($uri, $size, $uid, $status = FILE_STATUS_PERMANENT) {
+    file_put_contents($uri, $this->randomName($size));
+    $file = entity_create('file', array(
+      'uri' => $uri,
+      'uid' => $uid,
+      'status' => $status,
+    ));
+    $file->save();
+    return $file;
   }
 
   /**
diff --git a/core/modules/filter/src/Tests/FilterDefaultConfigTest.php b/core/modules/filter/src/Tests/FilterDefaultConfigTest.php
index 9d8f3cacc049..7423b700c3ca 100644
--- a/core/modules/filter/src/Tests/FilterDefaultConfigTest.php
+++ b/core/modules/filter/src/Tests/FilterDefaultConfigTest.php
@@ -30,7 +30,7 @@ function setUp() {
     // filter_permission() calls into url() to output a link in the description.
     $this->installSchema('system', 'url_alias');
 
-    $this->installSchema('user', array('users_roles'));
+    $this->installEntitySchema('user');
 
     // Install filter_test module, which ships with custom default format.
     $this->installConfig(array('user', 'filter_test'));
diff --git a/core/modules/forum/src/Tests/Views/ForumIntegrationTest.php b/core/modules/forum/src/Tests/Views/ForumIntegrationTest.php
index 65d9f1b44851..6e40370389fb 100644
--- a/core/modules/forum/src/Tests/Views/ForumIntegrationTest.php
+++ b/core/modules/forum/src/Tests/Views/ForumIntegrationTest.php
@@ -51,7 +51,7 @@ protected function setUp() {
   public function testForumIntegration() {
     // Create a forum.
     $entity_manager = $this->container->get('entity.manager');
-    $term = $entity_manager->getStorage('taxonomy_term')->create(array('vid' => 'forums'));
+    $term = $entity_manager->getStorage('taxonomy_term')->create(array('vid' => 'forums', 'name' => $this->randomName()));
     $term->save();
 
     $comment_storage = $entity_manager->getStorage('comment');
diff --git a/core/modules/hal/src/Tests/EntityTest.php b/core/modules/hal/src/Tests/EntityTest.php
index bfbe6f1d9384..8bc3fed8b062 100644
--- a/core/modules/hal/src/Tests/EntityTest.php
+++ b/core/modules/hal/src/Tests/EntityTest.php
@@ -38,10 +38,10 @@ function setUp() {
 
     \Drupal::service('router.builder')->rebuild();
     $this->installSchema('system', array('sequences'));
-    $this->installSchema('node', array('node', 'node_field_data', 'node_revision', 'node_field_revision'));
-    $this->installSchema('comment', array('comment', 'comment_entity_statistics'));
-    $this->installSchema('user', array('users_roles'));
-    $this->installSchema('taxonomy', array('taxonomy_term_data', 'taxonomy_term_hierarchy'));
+    $this->installSchema('comment', array('comment_entity_statistics'));
+    $this->installEntitySchema('node');
+    $this->installEntitySchema('comment');
+    $this->installEntitySchema('taxonomy_term');
   }
 
   /**
diff --git a/core/modules/hal/src/Tests/NormalizerTestBase.php b/core/modules/hal/src/Tests/NormalizerTestBase.php
index 894cc40ae3c9..c74854f7f27f 100644
--- a/core/modules/hal/src/Tests/NormalizerTestBase.php
+++ b/core/modules/hal/src/Tests/NormalizerTestBase.php
@@ -62,8 +62,8 @@ abstract class NormalizerTestBase extends DrupalUnitTestBase {
   function setUp() {
     parent::setUp();
     $this->installSchema('system', array('url_alias', 'router'));
-    $this->installSchema('user', array('users'));
-    $this->installSchema('entity_test', array('entity_test'));
+    $this->installEntitySchema('user');
+    $this->installEntitySchema('entity_test');
     $this->installConfig(array('field', 'language'));
 
     // Add English as a language.
diff --git a/core/modules/image/src/Tests/ImageItemTest.php b/core/modules/image/src/Tests/ImageItemTest.php
index 7803a1121e32..e17987b14e3e 100644
--- a/core/modules/image/src/Tests/ImageItemTest.php
+++ b/core/modules/image/src/Tests/ImageItemTest.php
@@ -47,7 +47,8 @@ public static function getInfo() {
   public function setUp() {
     parent::setUp();
 
-    $this->installSchema('file', array('file_managed', 'file_usage'));
+    $this->installEntitySchema('file');
+    $this->installSchema('file', array('file_usage'));
 
     entity_create('field_config', array(
       'name' => 'image_test',
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateBookTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateBookTest.php
index d29ad95590d8..d7fc9a315f49 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateBookTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateBookTest.php
@@ -38,6 +38,7 @@ protected function setUp() {
       $entity = entity_create('node', array(
         'type' => 'story',
         'nid' => $i,
+        'status' => TRUE,
       ));
       $entity->enforceIsNew();
       $entity->save();
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateFieldInstanceTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateFieldInstanceTest.php
index 98c53e9d14eb..dfaa2a3c6687 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateFieldInstanceTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateFieldInstanceTest.php
@@ -107,6 +107,7 @@ public function testFieldInstanceSettings() {
       'prefix' => 'pref',
       'suffix' => 'suf',
       'unsigned' => '',
+      'size' => 'normal',
     );
     $this->assertEqual($field->getSettings(), $expected);
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateTaxonomyTermTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateTaxonomyTermTest.php
index 684b62642b47..5969543e20e5 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateTaxonomyTermTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateTaxonomyTermTest.php
@@ -60,11 +60,13 @@ public function testTaxonomyTerms() {
         'source_vid' => 1,
         'vid' => 'vocabulary_1_i_0_',
         'weight' => 0,
+        'parent' => array(0),
       ),
       '2' => array(
         'source_vid' => 2,
         'vid' => 'vocabulary_2_i_1_',
         'weight' => 3,
+        'parent' => array(0),
       ),
       '3' => array(
         'source_vid' => 2,
@@ -76,6 +78,7 @@ public function testTaxonomyTerms() {
         'source_vid' => 3,
         'vid' => 'vocabulary_3_i_2_',
         'weight' => 6,
+        'parent' => array(0),
       ),
       '5' => array(
         'source_vid' => 3,
@@ -98,8 +101,8 @@ public function testTaxonomyTerms() {
       $this->assertIdentical($term->description->value, "description of term {$tid} of vocabulary {$values['source_vid']}");
       $this->assertEqual($term->vid->target_id, $values['vid']);
       $this->assertEqual($term->weight->value, $values['weight']);
-      if (empty($values['parent'])) {
-        $this->assertNull($term->parent->value);
+      if ($values['parent'] === array(0)) {
+        $this->assertEqual($term->parent->value, 0);
       }
       else {
         $parents = array();
diff --git a/core/modules/node/node.install b/core/modules/node/node.install
index b075d938a1dd..d0d6d1caf7ac 100644
--- a/core/modules/node/node.install
+++ b/core/modules/node/node.install
@@ -39,311 +39,6 @@ function node_requirements($phase) {
  * Implements hook_schema().
  */
 function node_schema() {
-  $schema['node'] = array(
-    'description' => 'The base table for nodes.',
-    'fields' => array(
-      'nid' => array(
-        'description' => 'The primary identifier for a node.',
-        'type' => 'serial',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-      ),
-      'uuid' => array(
-        'description' => 'Unique Key: Universally unique identifier for this entity.',
-        'type' => 'varchar',
-        'length' => 128,
-        'not null' => FALSE,
-      ),
-      // Defaults to NULL in order to avoid a brief period of potential
-      // deadlocks on the index.
-      'vid' => array(
-        'description' => 'The current {node_field_revision}.vid version identifier.',
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => FALSE,
-        'default' => NULL,
-      ),
-      'type' => array(
-        'description' => 'The type of this node.',
-        'type' => 'varchar',
-        'length' => 32,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-    ),
-    'indexes' => array(
-      'node_type' => array(array('type', 4)),
-    ),
-    'unique keys' => array(
-      'vid' => array('vid'),
-      'uuid' => array('uuid'),
-    ),
-    'foreign keys' => array(
-      'node_revision' => array(
-        'table' => 'node_revision',
-        'columns' => array('vid' => 'vid'),
-      ),
-    ),
-    'primary key' => array('nid'),
-  );
-
-  $schema['node_revision'] = array(
-    'description' => 'Stores information about each saved version of a {node}.',
-    'fields' => array(
-      'nid' => array(
-        'description' => 'The {node} this version belongs to.',
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-      ),
-      'vid' => array(
-        'description' => 'The primary identifier for this version.',
-        'type' => 'serial',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-      ),
-      'revision_uid' => array(
-        'description' => 'The {users}.uid that created this version.',
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'default' => 0,
-      ),
-      'log' => array(
-        'description' => 'The log entry explaining the changes in this version.',
-        'type' => 'text',
-        'not null' => FALSE,
-        'size' => 'big',
-      ),
-      'revision_timestamp' => array(
-        'description' => 'The Unix timestamp when the version was created.',
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 0,
-      ),
-      'langcode' => array(
-        'description' => 'The {language}.langcode of this version.',
-        'type' => 'varchar',
-        'length' => 12,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-    ),
-    'indexes' => array(
-      'nid' => array('nid'),
-      'revision_uid' => array('revision_uid'),
-      'node_langcode' => array('langcode'),
-    ),
-    'foreign keys' => array(
-      'versioned_node' => array(
-        'table' => 'node',
-        'columns' => array('nid' => 'nid'),
-      ),
-      'version_author' => array(
-        'table' => 'users',
-        'columns' => array('revision_uid' => 'uid'),
-      ),
-    ),
-    'primary key' => array('vid'),
-  );
-
-  // Node field storage.
-  $schema['node_field_data'] = array(
-    'description' => 'Data table for node base fields.',
-    'fields' => array(
-      'nid' => array(
-        'description' => 'The primary identifier for a node.',
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-      ),
-      'vid' => array(
-        'description' => 'The current {node_field_revision}.vid version identifier.',
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-      ),
-      'type' => array(
-        'description' => 'The {node_type}.type of this node.',
-        'type' => 'varchar',
-        'length' => 32,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-      'langcode' => array(
-        'description' => 'The {language}.langcode of these node property values.',
-        'type' => 'varchar',
-        'length' => 12,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-      'default_langcode' => array(
-        'description' => 'Boolean indicating whether the property values are in the {language}.langcode of this node.',
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 1,
-      ),
-      'title' => array(
-        'description' => 'The title of this node, always treated as non-markup plain text.',
-        'type' => 'varchar',
-        'length' => 255,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-      'uid' => array(
-        'description' => 'The {users}.uid that owns this node; initially, this is the user that created it.',
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'default' => 0,
-      ),
-      'status' => array(
-        'description' => 'Boolean indicating whether the node translation is published (visible to non-administrators).',
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 1,
-      ),
-      'created' => array(
-        'description' => 'The Unix timestamp when the node translation was created.',
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 0,
-      ),
-      'changed' => array(
-        'description' => 'The Unix timestamp when the node translation was most recently saved.',
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 0,
-      ),
-      'promote' => array(
-        'description' => 'Boolean indicating whether the node translation should be displayed on the front page.',
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 0,
-      ),
-      'sticky' => array(
-        'description' => 'Boolean indicating whether the node translation should be displayed at the top of lists in which it appears.',
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 0,
-      ),
-    ),
-    'indexes' => array(
-      'node_changed' => array('changed'),
-      'node_created' => array('created'),
-      'node_default_langcode' => array('default_langcode'),
-      'node_langcode' => array('langcode'),
-      'node_frontpage' => array('promote', 'status', 'sticky', 'created'),
-      'node_status_type' => array('status', 'type', 'nid'),
-      'node_title_type' => array('title', array('type', 4)),
-      'node_type' => array(array('type', 4)),
-      'vid' => array('vid'),
-      'uid' => array('uid'),
-    ),
-    'foreign keys' => array(
-      'node_base' => array(
-        'table' => 'node',
-        'columns' => array('nid' => 'nid'),
-      ),
-      'node_author' => array(
-        'table' => 'users',
-        'columns' => array('uid' => 'uid'),
-      ),
-    ),
-    'primary key' => array('nid', 'langcode'),
-  );
-
-  $schema['node_field_revision'] = array(
-    'description' => 'Revision table for node base fields.',
-    'fields' => array(
-      'nid' => array(
-        'description' => 'The {node} this version belongs to.',
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-      ),
-      'vid' => array(
-        'description' => 'The primary identifier for this version.',
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-      ),
-      'langcode' => array(
-        'description' => 'The {language}.langcode of this version.',
-        'type' => 'varchar',
-        'length' => 12,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-      'default_langcode' => array(
-        'description' => 'Boolean indicating whether the property values of this version are in the {language}.langcode of this node.',
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 1,
-      ),
-      'title' => array(
-        'description' => 'The title of this version, always treated as non-markup plain text.',
-        'type' => 'varchar',
-        'length' => 255,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-      'uid' => array(
-        'description' => 'The {users}.uid that created this node.',
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'default' => 0,
-      ),
-      'status' => array(
-        'description' => 'Boolean indicating whether the node (at the time of this revision) is published (visible to non-administrators).',
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 1,
-      ),
-      'created' => array(
-        'description' => 'The Unix timestamp when the node was created.',
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 0,
-      ),
-      'changed' => array(
-        'description' => 'The Unix timestamp when the version was most recently saved.',
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 0,
-      ),
-      'promote' => array(
-        'description' => 'Boolean indicating whether the node (at the time of this revision) should be displayed on the front page.',
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 0,
-      ),
-      'sticky' => array(
-        'description' => 'Boolean indicating whether the node (at the time of this revision) should be displayed at the top of lists in which it appears.',
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 0,
-      ),
-    ),
-    'indexes' => array(
-      'uid' => array('uid'),
-      'node_default_langcode' => array('default_langcode'),
-      'node_langcode' => array('langcode'),
-    ),
-    'foreign keys' => array(
-      'versioned_node' => array(
-        'table' => 'node',
-        'columns' => array('nid' => 'nid'),
-      ),
-      'node_author' => array(
-        'table' => 'users',
-        'columns' => array('uid' => 'uid'),
-      ),
-    ),
-    'primary key' => array('vid', 'langcode'),
-  );
-
   $schema['node_access'] = array(
     'description' => 'Identifies which realm/grant pairs a user must possess in order to view, update, or delete specific nodes.',
     'fields' => array(
diff --git a/core/modules/node/node.module b/core/modules/node/node.module
index 2253f71e08ab..38e047b804e7 100644
--- a/core/modules/node/node.module
+++ b/core/modules/node/node.module
@@ -807,7 +807,10 @@ function node_user_cancel($edit, $account, $method) {
       // Anonymize all of the nodes for this old account.
       module_load_include('inc', 'node', 'node.admin');
       $vids = \Drupal::entityManager()->getStorage('node')->userRevisionIds($account);
-      node_mass_update($vids, array('uid' => 0), NULL, TRUE, TRUE);
+      node_mass_update($vids, array(
+        'uid' => 0,
+        'revision_uid' => 0,
+      ), NULL, TRUE, TRUE);
       break;
   }
 }
diff --git a/core/modules/node/src/Entity/Node.php b/core/modules/node/src/Entity/Node.php
index 1d21504e6afa..7fb33e690938 100644
--- a/core/modules/node/src/Entity/Node.php
+++ b/core/modules/node/src/Entity/Node.php
@@ -62,6 +62,23 @@
  */
 class Node extends ContentEntityBase implements NodeInterface {
 
+  /**
+   * {@inheritdoc}
+   */
+  public function preSave(EntityStorageInterface $storage) {
+    parent::preSave($storage);
+
+    // If no owner has been set explicitly, make the current user the owner.
+    if (!$this->getOwner()) {
+      $this->setOwnerId(\Drupal::currentUser()->id());
+    }
+    // If no revision author has been set explicitly, make the node owner the
+    // revision author.
+    if (!$this->getRevisionAuthor()) {
+      $this->setRevisionAuthorId($this->getOwnerId());
+    }
+  }
+
   /**
    * {@inheritdoc}
    */
@@ -340,6 +357,7 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
       ->setLabel(t('Type'))
       ->setDescription(t('The node type.'))
       ->setSetting('target_type', 'node_type')
+      ->setSetting('max_length', EntityTypeInterface::BUNDLE_MAX_LENGTH)
       ->setReadOnly(TRUE);
 
     $fields['langcode'] = FieldDefinition::create('language')
@@ -353,10 +371,8 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
       ->setRequired(TRUE)
       ->setTranslatable(TRUE)
       ->setRevisionable(TRUE)
-      ->setSettings(array(
-        'default_value' => '',
-        'max_length' => 255,
-      ))
+      ->setSetting('default_value', '')
+      ->setSetting('max_length', 255)
       ->setDisplayOptions('view', array(
         'label' => 'hidden',
         'type' => 'string',
@@ -372,10 +388,7 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
       ->setLabel(t('Author'))
       ->setDescription(t('The user that is the node author.'))
       ->setRevisionable(TRUE)
-      ->setSettings(array(
-        'target_type' => 'user',
-        'default_value' => 0,
-      ))
+      ->setSetting('target_type', 'user')
       ->setTranslatable(TRUE);
 
     $fields['status'] = FieldDefinition::create('boolean')
@@ -408,7 +421,7 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
       ->setRevisionable(TRUE)
       ->setTranslatable(TRUE);
 
-    $fields['revision_timestamp'] = FieldDefinition::create('timestamp')
+    $fields['revision_timestamp'] = FieldDefinition::create('created')
       ->setLabel(t('Revision timestamp'))
       ->setDescription(t('The time that the current revision was created.'))
       ->setQueryable(FALSE)
@@ -417,11 +430,11 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
     $fields['revision_uid'] = FieldDefinition::create('entity_reference')
       ->setLabel(t('Revision user ID'))
       ->setDescription(t('The user ID of the author of the current revision.'))
-      ->setSettings(array('target_type' => 'user'))
+      ->setSetting('target_type', 'user')
       ->setQueryable(FALSE)
       ->setRevisionable(TRUE);
 
-    $fields['log'] = FieldDefinition::create('string')
+    $fields['log'] = FieldDefinition::create('string_long')
       ->setLabel(t('Log'))
       ->setDescription(t('The log entry explaining the changes in this revision.'))
       ->setRevisionable(TRUE)
@@ -436,10 +449,30 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
   public static function bundleFieldDefinitions(EntityTypeInterface $entity_type, $bundle, array $base_field_definitions) {
     $node_type = node_type_load($bundle);
     $fields = array();
+
+    // When deleting a node type the corresponding node displays are deleted as
+    // well. In order to be deleted, they need to be loaded first. Entity
+    // displays, however, fetch the field definitions of the respective entity
+    // type to fill in their defaults. Therefore this function ends up being
+    // called with a non-existing bundle.
+    // @todo Fix this in https://drupal.org/node/2248795
+    if (!$node_type) {
+      return $fields;
+    }
+
     if (isset($node_type->title_label)) {
       $fields['title'] = clone $base_field_definitions['title'];
       $fields['title']->setLabel($node_type->title_label);
     }
+
+    $options = $node_type->getModuleSettings('node')['options'];
+    $fields['status'] = clone $base_field_definitions['status'];
+    $fields['status']->setSetting('default_value', !empty($options['status']) ? NODE_PUBLISHED : NODE_NOT_PUBLISHED);
+    $fields['promote'] = clone $base_field_definitions['promote'];
+    $fields['promote']->setSetting('default_value', !empty($options['promote']) ? NODE_PROMOTED : NODE_NOT_PROMOTED);
+    $fields['sticky'] = clone $base_field_definitions['sticky'];
+    $fields['sticky']->setSetting('default_value', !empty($options['sticky']) ? NODE_STICKY : NODE_NOT_STICKY);
+
     return $fields;
   }
 
diff --git a/core/modules/node/src/NodeForm.php b/core/modules/node/src/NodeForm.php
index 37bb7da74ab4..0c5bbc691639 100644
--- a/core/modules/node/src/NodeForm.php
+++ b/core/modules/node/src/NodeForm.php
@@ -36,16 +36,7 @@ protected function prepareEntity() {
     $type = entity_load('node_type', $node->bundle());
     $this->settings = $type->getModuleSettings('node');
 
-    // If this is a new node, fill in the default values.
-    if ($node->isNew()) {
-      foreach (array('status', 'promote', 'sticky') as $key) {
-        // Multistep node forms might have filled in something already.
-        if ($node->$key->isEmpty()) {
-          $node->$key = (int) !empty($this->settings['options'][$key]);
-        }
-      }
-    }
-    else {
+    if (!$node->isNew()) {
       $node->date = format_date($node->getCreatedTime(), 'custom', 'Y-m-d H:i:s O');
       // Remove the log message from the original node entity.
       $node->log = NULL;
diff --git a/core/modules/node/src/NodeStorage.php b/core/modules/node/src/NodeStorage.php
index 8bb17fd4d4d1..8f87df5c922e 100644
--- a/core/modules/node/src/NodeStorage.php
+++ b/core/modules/node/src/NodeStorage.php
@@ -2,12 +2,11 @@
 
 /**
  * @file
- * Definition of Drupal\node\NodeStorageController.
+ * Contains \Drupal\node\NodeStorage.
  */
 
 namespace Drupal\node;
 
-use Drupal\Core\Database\Database;
 use Drupal\Core\Entity\ContentEntityDatabaseStorage;
 use Drupal\Core\Session\AccountInterface;
 use Drupal\Core\Language\Language;
@@ -59,4 +58,51 @@ public function clearRevisionsLanguage($language) {
       ->condition('langcode', $language->id)
       ->execute();
   }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getSchema() {
+    $schema = parent::getSchema();
+
+    // Marking the respective fields as NOT NULL makes the indexes more
+    // performant.
+    $schema['node_field_data']['fields']['changed']['not null'] = TRUE;
+    $schema['node_field_data']['fields']['created']['not null'] = TRUE;
+    $schema['node_field_data']['fields']['default_langcode']['not null'] = TRUE;
+    $schema['node_field_data']['fields']['promote']['not null'] = TRUE;
+    $schema['node_field_data']['fields']['status']['not null'] = TRUE;
+    $schema['node_field_data']['fields']['sticky']['not null'] = TRUE;
+    $schema['node_field_data']['fields']['title']['not null'] = TRUE;
+    $schema['node_field_revision']['fields']['default_langcode']['not null'] = TRUE;
+
+    // @todo Revisit index definitions in https://drupal.org/node/2015277.
+    $schema['node_revision']['indexes'] += array(
+      'node__langcode' => array('langcode'),
+    );
+    $schema['node_revision']['foreign keys'] += array(
+      'node__revision_author' => array(
+        'table' => 'users',
+        'columns' => array('revision_uid' => 'uid'),
+      ),
+    );
+
+    $schema['node_field_data']['indexes'] += array(
+      'node__changed' => array('changed'),
+      'node__created' => array('created'),
+      'node__default_langcode' => array('default_langcode'),
+      'node__langcode' => array('langcode'),
+      'node__frontpage' => array('promote', 'status', 'sticky', 'created'),
+      'node__status_type' => array('status', 'type', 'nid'),
+      'node__title_type' => array('title', array('type', 4)),
+    );
+
+    $schema['node_field_revision']['indexes'] += array(
+      'node__default_langcode' => array('default_langcode'),
+      'node__langcode' => array('langcode'),
+    );
+
+    return $schema;
+  }
+
 }
diff --git a/core/modules/node/src/Tests/Condition/NodeConditionTest.php b/core/modules/node/src/Tests/Condition/NodeConditionTest.php
index 6ba87e622f6d..e429de54d28f 100644
--- a/core/modules/node/src/Tests/Condition/NodeConditionTest.php
+++ b/core/modules/node/src/Tests/Condition/NodeConditionTest.php
@@ -26,7 +26,7 @@ public static function getInfo() {
 
   public function setUp() {
     parent::setUp();
-    $this->installSchema('node', array('node', 'node_field_data', 'node_field_revision', 'node_revision'));
+    $this->installEntitySchema('node');
 
     // Create the node bundles required for testing.
     $type = entity_create('node_type', array('type' => 'page', 'name' => 'page'));
diff --git a/core/modules/node/src/Tests/Config/NodeImportCreateTest.php b/core/modules/node/src/Tests/Config/NodeImportCreateTest.php
index 2f6a8dbfb71d..fadc70612b05 100644
--- a/core/modules/node/src/Tests/Config/NodeImportCreateTest.php
+++ b/core/modules/node/src/Tests/Config/NodeImportCreateTest.php
@@ -27,7 +27,7 @@ class NodeImportCreateTest extends DrupalUnitTestBase {
    */
   public function setUp() {
     parent::setUp();
-    $this->installSchema('user', array('users'));
+    $this->installEntitySchema('user');
 
     // Set default storage backend.
     $this->installConfig(array('field'));
diff --git a/core/modules/node/src/Tests/NodeFormButtonsTest.php b/core/modules/node/src/Tests/NodeFormButtonsTest.php
index 1aa7dcd6ecb6..9a6831db078f 100644
--- a/core/modules/node/src/Tests/NodeFormButtonsTest.php
+++ b/core/modules/node/src/Tests/NodeFormButtonsTest.php
@@ -108,7 +108,10 @@ function testNodeFormButtons() {
     // Set article content type default to unpublished. This will change the
     // the initial order of buttons and/or status of the node when creating
     // a node.
-    \Drupal::config('node.type.article')->set('settings.node.options.status', FALSE)->save();
+    /** @var \Drupal\node\NodeTypeInterface $node_type */
+    $node_type = $this->container->get('entity.manager')->getStorage('node_type')->load('article');
+    $node_type->settings['node']['options']['status'] = FALSE;
+    $node_type->save();
 
     // Verify the buttons on a node add form for an administrator.
     $this->drupalLogin($this->admin_user);
diff --git a/core/modules/node/src/Tests/NodeLastChangedTest.php b/core/modules/node/src/Tests/NodeLastChangedTest.php
index bf234980c4b8..aa1dbfa41d17 100644
--- a/core/modules/node/src/Tests/NodeLastChangedTest.php
+++ b/core/modules/node/src/Tests/NodeLastChangedTest.php
@@ -31,11 +31,8 @@ public static function getInfo() {
 
   public function setUp() {
     parent::setUp();
-    $this->installSchema('node', 'node');
-    $this->installSchema('node', 'node_revision');
-    $this->installSchema('node', 'node_field_data');
-    $this->installSchema('node', 'node_field_revision');
-    $this->installSchema('user', array('users'));
+    $this->installEntitySchema('node');
+    $this->installEntitySchema('user');
   }
 
   /**
diff --git a/core/modules/node/src/Tests/NodeTokenReplaceTest.php b/core/modules/node/src/Tests/NodeTokenReplaceTest.php
index 5e9e37a4b641..7f121133c27b 100644
--- a/core/modules/node/src/Tests/NodeTokenReplaceTest.php
+++ b/core/modules/node/src/Tests/NodeTokenReplaceTest.php
@@ -38,7 +38,7 @@ public static function getInfo() {
    */
   public function setUp() {
     parent::setUp();
-    $this->installSchema('node', array('node', 'node_field_revision', 'node_field_data', 'node_revision'));
+    $this->installEntitySchema('node');
     $this->installConfig(array('filter'));
 
     $node_type = entity_create('node_type', array('type' => 'article', 'name' => 'Article'));
diff --git a/core/modules/node/src/Tests/NodeValidationTest.php b/core/modules/node/src/Tests/NodeValidationTest.php
index e71d75b377cb..94c7ca38028a 100644
--- a/core/modules/node/src/Tests/NodeValidationTest.php
+++ b/core/modules/node/src/Tests/NodeValidationTest.php
@@ -34,7 +34,7 @@ public static function getInfo() {
    */
   public function setUp() {
     parent::setUp();
-    $this->installSchema('node', array('node', 'node_field_data', 'node_field_revision', 'node_revision'));
+    $this->installEntitySchema('node');
 
     // Create a node type for testing.
     $type = entity_create('node_type', array('type' => 'page', 'name' => 'page'));
diff --git a/core/modules/quickedit/src/Tests/QuickEditTestBase.php b/core/modules/quickedit/src/Tests/QuickEditTestBase.php
index c72899bc838a..9fb217c00e84 100644
--- a/core/modules/quickedit/src/Tests/QuickEditTestBase.php
+++ b/core/modules/quickedit/src/Tests/QuickEditTestBase.php
@@ -27,7 +27,7 @@ abstract class QuickEditTestBase extends DrupalUnitTestBase {
   protected function setUp() {
     parent::setUp();
 
-    $this->installSchema('entity_test', array('entity_test', 'entity_test_rev'));
+    $this->installEntitySchema('entity_test');
     $this->installConfig(array('field', 'filter'));
   }
 
diff --git a/core/modules/rdf/src/Tests/CommentAttributesTest.php b/core/modules/rdf/src/Tests/CommentAttributesTest.php
index f152e0b1c2a2..d3cacfd970c1 100644
--- a/core/modules/rdf/src/Tests/CommentAttributesTest.php
+++ b/core/modules/rdf/src/Tests/CommentAttributesTest.php
@@ -163,7 +163,7 @@ public function testCommentRdfaMarkup() {
     $anonymous_user['name'] = $this->randomName();
     $anonymous_user['mail'] = 'tester@simpletest.org';
     $anonymous_user['homepage'] = 'http://example.org/';
-    $comment2 = $this->saveComment($this->node->id(), NULL, $anonymous_user);
+    $comment2 = $this->saveComment($this->node->id(), 0, $anonymous_user);
 
     // Tests comment #2 as anonymous user.
     $parser = new \EasyRdf_Parser_Rdfa();
diff --git a/core/modules/rdf/src/Tests/Field/TaxonomyTermReferenceRdfaTest.php b/core/modules/rdf/src/Tests/Field/TaxonomyTermReferenceRdfaTest.php
index 5086bf19d268..f733014eb37a 100644
--- a/core/modules/rdf/src/Tests/Field/TaxonomyTermReferenceRdfaTest.php
+++ b/core/modules/rdf/src/Tests/Field/TaxonomyTermReferenceRdfaTest.php
@@ -50,7 +50,7 @@ public static function getInfo() {
   public function setUp() {
     parent::setUp();
 
-    $this->installSchema('taxonomy', array('taxonomy_term_data', 'taxonomy_term_hierarchy'));
+    $this->installEntitySchema('taxonomy_term');
 
     $vocabulary = entity_create('taxonomy_vocabulary', array(
       'name' => $this->randomName(),
diff --git a/core/modules/rest/src/Plugin/rest/resource/EntityResource.php b/core/modules/rest/src/Plugin/rest/resource/EntityResource.php
index 9b3c792ed476..718f5c8157d8 100644
--- a/core/modules/rest/src/Plugin/rest/resource/EntityResource.php
+++ b/core/modules/rest/src/Plugin/rest/resource/EntityResource.php
@@ -133,6 +133,13 @@ public function patch(EntityInterface $original_entity, EntityInterface $entity
     // Overwrite the received properties.
     foreach ($entity as $field_name => $field) {
       if (isset($entity->{$field_name})) {
+        // It is not possible to set the language to NULL as it is automatically
+        // re-initialized. As it must not be empty, skip it if it is.
+        // @todo: Use the langcode entity key when available. See
+        //   https://drupal.org/node/2143729.
+        if ($field_name == 'langcode' && $field->isEmpty()) {
+          continue;
+        }
         if ($field->isEmpty() && !$original_entity->get($field_name)->access('delete')) {
           throw new AccessDeniedHttpException(t('Access denied on deleting field @field.', array('@field' => $field_name)));
         }
diff --git a/core/modules/rest/src/Tests/UpdateTest.php b/core/modules/rest/src/Tests/UpdateTest.php
index 15ef7f3730d7..7afedfa95445 100644
--- a/core/modules/rest/src/Tests/UpdateTest.php
+++ b/core/modules/rest/src/Tests/UpdateTest.php
@@ -58,7 +58,6 @@ public function testPatchUpdate() {
     $patch_entity = entity_create($entity_type, $patch_values);
     // We don't want to overwrite the UUID.
     unset($patch_entity->uuid);
-    $patch_entity->save();
     $serialized = $serializer->serialize($patch_entity, $this->defaultFormat);
 
     // Update the entity over the REST API.
diff --git a/core/modules/serialization/src/Tests/EntitySerializationTest.php b/core/modules/serialization/src/Tests/EntitySerializationTest.php
index 865704de3c19..1ad843ae1b9d 100644
--- a/core/modules/serialization/src/Tests/EntitySerializationTest.php
+++ b/core/modules/serialization/src/Tests/EntitySerializationTest.php
@@ -80,18 +80,12 @@ public function testNormalize() {
       'id' => array(
         array('value' => 1),
       ),
-      'revision_id' => array(
-        array('value' => 1),
-      ),
       'uuid' => array(
         array('value' => $this->entity->uuid()),
       ),
       'langcode' => array(
         array('value' => Language::LANGCODE_NOT_SPECIFIED),
       ),
-      'default_langcode' => array(
-        array('value' => NULL),
-      ),
       'name' => array(
         array('value' => $this->values['name']),
       ),
@@ -101,6 +95,9 @@ public function testNormalize() {
       'user_id' => array(
         array('target_id' => $this->values['user_id']),
       ),
+      'revision_id' => array(
+        array('value' => 1),
+      ),
       'field_test_text' => array(
         array(
           'value' => $this->values['field_test_text']['value'],
@@ -141,13 +138,12 @@ public function testSerialize() {
     // order.
     $expected = array(
       'id' => '<id><value>' . $this->entity->id() . '</value></id>',
-      'revision_id' => '<revision_id><value>' . $this->entity->getRevisionId() . '</value></revision_id>',
       'uuid' => '<uuid><value>' . $this->entity->uuid() . '</value></uuid>',
       'langcode' => '<langcode><value>' . Language::LANGCODE_NOT_SPECIFIED . '</value></langcode>',
-      'default_langcode' => '<default_langcode><value/></default_langcode>',
       'name' => '<name><value>' . $this->values['name'] . '</value></name>',
       'type' => '<type><value>entity_test_mulrev</value></type>',
       'user_id' => '<user_id><target_id>' . $this->values['user_id'] . '</target_id></user_id>',
+      'revision_id' => '<revision_id><value>' . $this->entity->getRevisionId() . '</value></revision_id>',
       'field_test_text' => '<field_test_text><value>' . $this->values['field_test_text']['value'] . '</value><format>' . $this->values['field_test_text']['format'] . '</format></field_test_text>',
     );
     // Sort it in the same order as normalised.
diff --git a/core/modules/serialization/src/Tests/NormalizerTestBase.php b/core/modules/serialization/src/Tests/NormalizerTestBase.php
index 3b0cfd68c609..0c1dc0395866 100644
--- a/core/modules/serialization/src/Tests/NormalizerTestBase.php
+++ b/core/modules/serialization/src/Tests/NormalizerTestBase.php
@@ -21,8 +21,8 @@ abstract class NormalizerTestBase extends DrupalUnitTestBase {
   protected function setUp() {
     parent::setUp();
 
-    $this->installSchema('entity_test', array('entity_test_mulrev', 'entity_test_mulrev_revision', 'entity_test_mulrev_property_revision', 'entity_test_mulrev_property_data'));
-    $this->installSchema('user', array('users', 'users_roles'));
+    $this->installEntitySchema('entity_test_mulrev');
+    $this->installEntitySchema('user');
     $this->installSchema('system', array('url_alias'));
     $this->installConfig(array('field'));
 
diff --git a/core/modules/shortcut/shortcut.install b/core/modules/shortcut/shortcut.install
index b7ed49c9906e..be6f8b279364 100644
--- a/core/modules/shortcut/shortcut.install
+++ b/core/modules/shortcut/shortcut.install
@@ -12,96 +12,6 @@
  * Implements hook_schema().
  */
 function shortcut_schema() {
-  $schema['shortcut'] = array(
-    'description' => 'Stores shortcut items.',
-    'fields' => array(
-      'id' => array(
-        'type' => 'serial',
-        'not null' => TRUE,
-        'description' => 'Primary Key: Unique shortcut ID.',
-      ),
-      'uuid' => array(
-        'type' => 'varchar',
-        'length' => 128,
-        'not null' => FALSE,
-        'description' => 'Unique Key: Universally unique identifier for this shortcut.',
-      ),
-      'shortcut_set' => array(
-        'type' => 'varchar',
-        'length' => 32,
-        'not null' => TRUE,
-        'default' => '',
-        'description' => 'The bundle of the shortcut.',
-      ),
-      'langcode' => array(
-        'type' => 'varchar',
-        'length' => 12,
-        'not null' => TRUE,
-        'default' => '',
-        'description' => 'The {language}.langcode of the original variant of this shortcut.',
-      ),
-      'weight' => array(
-        'description' => 'Weight among shortcuts in the same shortcut set.',
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 0,
-      ),
-      'route_name' => array(
-        'description' => 'The machine name of a defined Symfony Route this menu item represents.',
-        'type' => 'varchar',
-        'length' => 255,
-      ),
-      'route_parameters' => array(
-        'description' => 'Serialized array of route parameters of this shortcut.',
-        'type' => 'blob',
-        'size' => 'big',
-        'not null' => FALSE,
-        'serialize' => TRUE,
-      ),
-    ),
-    'primary key' => array('id'),
-    'unique keys' => array(
-      'uuid' => array('uuid'),
-    ),
-  );
-
-  $schema['shortcut_field_data'] = array(
-    'description' => 'Stores shortcut properties.',
-    'fields' => array(
-      'id' => array(
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'description' => 'The {shortcut}.id of the shortcut.',
-      ),
-      'langcode' => array(
-        'type' => 'varchar',
-        'length' => 12,
-        'not null' => TRUE,
-        'default' => '',
-        'description' => 'The {language}.langcode of this variant of this shortcut.',
-      ),
-      'default_langcode' => array(
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 1,
-        'description' => 'Boolean indicating whether the current variant is in the original entity language.',
-      ),
-      'title' => array(
-        'type' => 'varchar',
-        'length' => 32,
-        'not null' => FALSE,
-        'description' => 'The title of the shortcut.',
-      ),
-    ),
-    'foreign keys' => array(
-      'shortcut' => array(
-        'table' => 'shortcut',
-        'columns' => array('id' => 'id'),
-      ),
-    ),
-    'primary key' => array('id', 'langcode'),
-  );
 
   $schema['shortcut_set_users'] = array(
     'description' => 'Maps users to shortcut sets.',
diff --git a/core/modules/shortcut/src/Entity/Shortcut.php b/core/modules/shortcut/src/Entity/Shortcut.php
index 03be8c8d4c0d..53106e7b2cdc 100644
--- a/core/modules/shortcut/src/Entity/Shortcut.php
+++ b/core/modules/shortcut/src/Entity/Shortcut.php
@@ -167,6 +167,7 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
       ->setLabel(t('Shortcut set'))
       ->setDescription(t('The bundle of the shortcut.'))
       ->setSetting('target_type', 'shortcut_set')
+      ->setSetting('max_length', EntityTypeInterface::BUNDLE_MAX_LENGTH)
       ->setRequired(TRUE);
 
     $fields['title'] = FieldDefinition::create('string')
@@ -174,10 +175,8 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
       ->setDescription(t('The name of the shortcut.'))
       ->setRequired(TRUE)
       ->setTranslatable(TRUE)
-      ->setSettings(array(
-        'default_value' => '',
-        'max_length' => 255,
-      ))
+      ->setSetting('default_value', '')
+      ->setSetting('max_length', 255)
       ->setDisplayOptions('form', array(
         'type' => 'string',
         'weight' => -10,
@@ -202,10 +201,6 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
       ->setLabel(t('Language code'))
       ->setDescription(t('The language code of the shortcut.'));
 
-    $fields['default_langcode'] = FieldDefinition::create('boolean')
-      ->setLabel(t('Default language'))
-      ->setDescription(t('Flag to indicate whether this is the default language.'));
-
     $fields['path'] = FieldDefinition::create('string')
       ->setLabel(t('Path'))
       ->setDescription(t('The computed shortcut path.'))
diff --git a/core/modules/shortcut/src/Entity/ShortcutSet.php b/core/modules/shortcut/src/Entity/ShortcutSet.php
index 32c1bb6132f0..b1b0fd760319 100644
--- a/core/modules/shortcut/src/Entity/ShortcutSet.php
+++ b/core/modules/shortcut/src/Entity/ShortcutSet.php
@@ -63,15 +63,17 @@ class ShortcutSet extends ConfigEntityBase implements ShortcutSetInterface {
   public function postSave(EntityStorageInterface $storage, $update = TRUE) {
     parent::postSave($storage, $update);
 
-    // Generate menu-compatible set name.
-    if (!$update && !$this->getOriginalId()) {
+    if (!$update && !$this->isSyncing()) {
       // Save a new shortcut set with links copied from the user's default set.
       $default_set = shortcut_default_set();
-      foreach ($default_set->getShortcuts() as $shortcut) {
-        $shortcut = $shortcut->createDuplicate();
-        $shortcut->enforceIsNew();
-        $shortcut->shortcut_set->target_id = $this->id();
-        $shortcut->save();
+      // This is the default set, do not copy shortcuts.
+      if ($default_set->id() != $this->id()) {
+        foreach ($default_set->getShortcuts() as $shortcut) {
+          $shortcut = $shortcut->createDuplicate();
+          $shortcut->enforceIsNew();
+          $shortcut->shortcut_set->target_id = $this->id();
+          $shortcut->save();
+        }
       }
     }
   }
diff --git a/core/modules/simpletest/src/KernelTestBase.php b/core/modules/simpletest/src/KernelTestBase.php
index 1188822ea574..260674716313 100644
--- a/core/modules/simpletest/src/KernelTestBase.php
+++ b/core/modules/simpletest/src/KernelTestBase.php
@@ -7,11 +7,13 @@
 
 namespace Drupal\simpletest;
 
+use Drupal\Component\Utility\String;
 use Drupal\Core\Database\Database;
 use Drupal\Core\DependencyInjection\ContainerBuilder;
 use Drupal\Core\DrupalKernel;
 use Drupal\Core\KeyValueStore\KeyValueMemoryFactory;
 use Drupal\Core\Language\Language;
+use Drupal\Core\Entity\Schema\EntitySchemaProviderInterface;
 use Symfony\Component\DependencyInjection\Reference;
 use Symfony\Component\HttpFoundation\Request;
 
@@ -338,6 +340,39 @@ protected function installSchema($module, $tables) {
     )));
   }
 
+
+
+  /**
+   * Installs the tables for a specific entity type.
+   *
+   * @param string $entity_type_id
+   *   The ID of the entity type.
+   */
+  protected function installEntitySchema($entity_type_id) {
+    /** @var \Drupal\Core\Entity\EntityManagerInterface $entity_manager */
+    $entity_manager = $this->container->get('entity.manager');
+    /** @var \Drupal\Core\Database\Schema $schema_handler */
+    $schema_handler = $this->container->get('database')->schema();
+
+    $storage = $entity_manager->getStorage($entity_type_id);
+    if ($storage instanceof EntitySchemaProviderInterface) {
+      $schema = $storage->getSchema();
+      foreach ($schema as $table_name => $table_schema) {
+        $schema_handler->createTable($table_name, $table_schema);
+      }
+
+      $this->pass(String::format('Installed entity type tables for the %entity_type entity type: %tables', array(
+        '%entity_type' => $entity_type_id,
+        '%tables' => '{' . implode('}, {', array_keys($schema)) . '}',
+      )));
+    }
+    else {
+      throw new \RuntimeException(String::format('Entity type %entity_type does not support automatic schema installation.', array(
+        '%entity-type' => $entity_type_id,
+      )));
+    }
+  }
+
   /**
    * Enables modules for this test.
    *
diff --git a/core/modules/simpletest/src/Tests/KernelTestBaseTest.php b/core/modules/simpletest/src/Tests/KernelTestBaseTest.php
index 0a97a6356293..1537393876c7 100644
--- a/core/modules/simpletest/src/Tests/KernelTestBaseTest.php
+++ b/core/modules/simpletest/src/Tests/KernelTestBaseTest.php
@@ -75,7 +75,7 @@ function testEnableModulesLoad() {
    */
   function testEnableModulesInstall() {
     $module = 'node';
-    $table = 'node';
+    $table = 'node_access';
 
     // Verify that the module does not exist yet.
     $this->assertFalse(\Drupal::moduleHandler()->moduleExists($module), "$module module not found.");
@@ -108,9 +108,9 @@ function testEnableModulesInstall() {
    */
   function testEnableModulesInstallContainer() {
     // Install Node module.
-    $this->enableModules(array('field', 'node'));
+    $this->enableModules(array('user', 'field', 'node'));
 
-    $this->installSchema('node', array('node', 'node_field_data'));
+    $this->installEntitySchema('node', array('node', 'node_field_data'));
     // Perform an entity query against node.
     $query = \Drupal::entityQuery('node');
     // Disable node access checks, since User module is not enabled.
@@ -125,7 +125,7 @@ function testEnableModulesInstallContainer() {
    */
   function testInstallSchema() {
     $module = 'entity_test';
-    $table = 'entity_test';
+    $table = 'entity_test_example';
     // Verify that we can install a table from the module schema.
     $this->installSchema($module, $table);
     $this->assertTrue(db_table_exists($table), "'$table' database table found.");
@@ -171,6 +171,18 @@ function testInstallSchema() {
     $this->assertTrue($schema, "'$table' table schema found.");
   }
 
+  /**
+   * Tests expected behavior of installEntitySchema().
+   */
+  function testInstallEntitySchema() {
+    $entity = 'entity_test';
+    // The entity_test Entity has a field that depends on the User module.
+    $this->enableModules(array('user'));
+    // Verity that the entity schema is created properly.
+    $this->installEntitySchema($entity);
+    $this->assertTrue(db_table_exists($entity), "'$entity' database table found.");
+  }
+
   /**
    * Tests expected behavior of installConfig().
    */
diff --git a/core/modules/system/src/Tests/Action/ActionUnitTest.php b/core/modules/system/src/Tests/Action/ActionUnitTest.php
index 7e2f651dbfd8..70fc66318c6b 100644
--- a/core/modules/system/src/Tests/Action/ActionUnitTest.php
+++ b/core/modules/system/src/Tests/Action/ActionUnitTest.php
@@ -45,7 +45,7 @@ protected function setUp() {
     parent::setUp();
 
     $this->actionManager = $this->container->get('plugin.manager.action');
-    $this->installSchema('user', array('users', 'users_roles'));
+    $this->installEntitySchema('user');
     $this->installSchema('system', array('sequences'));
   }
 
diff --git a/core/modules/system/src/Tests/Common/WriteRecordTest.php b/core/modules/system/src/Tests/Common/WriteRecordTest.php
index ffe5fdb1ce82..fd6ac63ba9dd 100644
--- a/core/modules/system/src/Tests/Common/WriteRecordTest.php
+++ b/core/modules/system/src/Tests/Common/WriteRecordTest.php
@@ -7,19 +7,19 @@
 
 namespace Drupal\system\Tests\Common;
 
-use Drupal\simpletest\WebTestBase;
+use Drupal\simpletest\DrupalUnitTestBase;
 
 /**
  * Tests writing of data records with drupal_write_record().
  */
-class WriteRecordTest extends WebTestBase {
+class WriteRecordTest extends DrupalUnitTestBase {
 
   /**
    * Modules to enable.
    *
    * @var array
    */
-  public static $modules = array('database_test', 'node');
+  public static $modules = array('database_test');
 
   public static function getInfo() {
     return array(
@@ -33,6 +33,8 @@ public static function getInfo() {
    * Tests the drupal_write_record() API function.
    */
   function testDrupalWriteRecord() {
+    $this->installSchema('database_test', array('test', 'test_null', 'test_serialized', 'test_composite_primary'));
+
     // Insert a record with no columns populated.
     $record = array();
     $insert_result = drupal_write_record('test', $record);
@@ -135,15 +137,14 @@ function testDrupalWriteRecord() {
     $this->assertTrue($update_result == SAVED_UPDATED, 'Correct value returned when a valid update is run without changing any values.');
 
     // Insert an object record for a table with a multi-field primary key.
-    $node_access = new \stdClass();
-    $node_access->nid = mt_rand();
-    $node_access->gid = mt_rand();
-    $node_access->realm = $this->randomName();
-    $insert_result = drupal_write_record('node_access', $node_access);
+    $composite_primary = new \stdClass();
+    $composite_primary->name = $this->randomName();
+    $composite_primary->age = mt_rand();
+    $insert_result = drupal_write_record('test_composite_primary', $composite_primary);
     $this->assertTrue($insert_result == SAVED_NEW, 'Correct value returned when a record is inserted with drupal_write_record() for a table with a multi-field primary key.');
 
     // Update the record.
-    $update_result = drupal_write_record('node_access', $node_access, array('nid', 'gid', 'realm'));
+    $update_result = drupal_write_record('test_composite_primary', $composite_primary, array('name', 'job'));
     $this->assertTrue($update_result == SAVED_UPDATED, 'Correct value returned when a record is updated with drupal_write_record() for a table with a multi-field primary key.');
   }
 
diff --git a/core/modules/system/src/Tests/Entity/EntityApiTest.php b/core/modules/system/src/Tests/Entity/EntityApiTest.php
index 4f693c97b3c7..caa7bb830627 100644
--- a/core/modules/system/src/Tests/Entity/EntityApiTest.php
+++ b/core/modules/system/src/Tests/Entity/EntityApiTest.php
@@ -25,16 +25,10 @@ public static function getInfo() {
 
   public function setUp() {
     parent::setUp();
-    $this->installSchema('entity_test', array(
-      'entity_test_mul',
-      'entity_test_mul_property_data',
-      'entity_test_rev',
-      'entity_test_rev_revision',
-      'entity_test_mulrev',
-      'entity_test_mulrev_revision',
-      'entity_test_mulrev_property_data',
-      'entity_test_mulrev_property_revision'
-    ));
+
+    $this->installEntitySchema('entity_test_rev');
+    $this->installEntitySchema('entity_test_mul');
+    $this->installEntitySchema('entity_test_mulrev');
   }
 
   /**
diff --git a/core/modules/system/src/Tests/Entity/EntityCrudHookTest.php b/core/modules/system/src/Tests/Entity/EntityCrudHookTest.php
index 1d49a026a0a0..fa701a770fb9 100644
--- a/core/modules/system/src/Tests/Entity/EntityCrudHookTest.php
+++ b/core/modules/system/src/Tests/Entity/EntityCrudHookTest.php
@@ -44,9 +44,14 @@ public static function getInfo() {
 
   public function setUp() {
     parent::setUp();
+
+    $this->installEntitySchema('node');
+    $this->installEntitySchema('comment');
+
     $this->installSchema('user', array('users_data'));
-    $this->installSchema('node', array('node', 'node_revision', 'node_field_data', 'node_field_revision', 'node_access'));
-    $this->installSchema('comment', array('comment', 'comment_entity_statistics'));
+    $this->installSchema('file', array('file_usage'));
+    $this->installSchema('node', array('node_access'));
+    $this->installSchema('comment', array('comment_entity_statistics'));
   }
 
   /**
@@ -219,7 +224,8 @@ public function testCommentHooks() {
    * Tests hook invocations for CRUD operations on files.
    */
   public function testFileHooks() {
-    $this->installSchema('file', array('file_managed', 'file_usage'));
+    $this->installEntitySchema('file');
+
     $url = 'public://entity_crud_hook_test.file';
     file_put_contents($url, 'Test test test');
     $file = entity_create('file', array(
@@ -346,7 +352,7 @@ public function testNodeHooks() {
    * Tests hook invocations for CRUD operations on taxonomy terms.
    */
   public function testTaxonomyTermHooks() {
-    $this->installSchema('taxonomy', array('taxonomy_term_data', 'taxonomy_term_hierarchy'));
+    $this->installEntitySchema('taxonomy_term');
 
     $vocabulary = entity_create('taxonomy_vocabulary', array(
       'name' => 'Test vocabulary',
@@ -415,7 +421,7 @@ public function testTaxonomyTermHooks() {
    * Tests hook invocations for CRUD operations on taxonomy vocabularies.
    */
   public function testTaxonomyVocabularyHooks() {
-    $this->installSchema('taxonomy', array('taxonomy_term_data', 'taxonomy_term_hierarchy'));
+    $this->installEntitySchema('taxonomy_term');
 
     $vocabulary = entity_create('taxonomy_vocabulary', array(
       'name' => 'Test vocabulary',
diff --git a/core/modules/system/src/Tests/Entity/EntityFieldTest.php b/core/modules/system/src/Tests/Entity/EntityFieldTest.php
index a838d2f6a764..f532b1f8fd00 100644
--- a/core/modules/system/src/Tests/Entity/EntityFieldTest.php
+++ b/core/modules/system/src/Tests/Entity/EntityFieldTest.php
@@ -41,18 +41,12 @@ public static function getInfo() {
 
   public function setUp() {
     parent::setUp();
-    $this->installSchema('user', array('users_data'));
-    $this->installSchema('node', array('node', 'node_revision', 'node_field_data', 'node_field_revision', 'node_access'));
-    $this->installSchema('entity_test', array(
-      'entity_test_mul',
-      'entity_test_mul_property_data',
-      'entity_test_rev',
-      'entity_test_rev_revision',
-      'entity_test_mulrev',
-      'entity_test_mulrev_revision',
-      'entity_test_mulrev_property_data',
-      'entity_test_mulrev_property_revision'
-    ));
+
+    $this->installEntitySchema('node');
+
+    $this->installEntitySchema('entity_test_rev');
+    $this->installEntitySchema('entity_test_mul');
+    $this->installEntitySchema('entity_test_mulrev');
 
     // Create the test field.
     entity_test_install();
diff --git a/core/modules/system/src/Tests/Entity/EntityLanguageTestBase.php b/core/modules/system/src/Tests/Entity/EntityLanguageTestBase.php
index ada2fbd60c7f..c76fc978227f 100644
--- a/core/modules/system/src/Tests/Entity/EntityLanguageTestBase.php
+++ b/core/modules/system/src/Tests/Entity/EntityLanguageTestBase.php
@@ -50,16 +50,10 @@ function setUp() {
 
     $this->languageManager = $this->container->get('language_manager');
 
-    $this->installSchema('entity_test', array(
-      'entity_test_mul',
-      'entity_test_mul_property_data',
-      'entity_test_rev',
-      'entity_test_rev_revision',
-      'entity_test_mulrev',
-      'entity_test_mulrev_revision',
-      'entity_test_mulrev_property_data',
-      'entity_test_mulrev_property_revision',
-    ));
+    $this->installEntitySchema('entity_test_rev');
+    $this->installEntitySchema('entity_test_mul');
+    $this->installEntitySchema('entity_test_mulrev');
+
     $this->installConfig(array('language'));
 
     // Create the test field.
diff --git a/core/modules/system/src/Tests/Entity/EntityQueryRelationshipTest.php b/core/modules/system/src/Tests/Entity/EntityQueryRelationshipTest.php
index e5d8cf460d60..8d676669aa12 100644
--- a/core/modules/system/src/Tests/Entity/EntityQueryRelationshipTest.php
+++ b/core/modules/system/src/Tests/Entity/EntityQueryRelationshipTest.php
@@ -70,7 +70,7 @@ public static function getInfo() {
   public function setUp() {
     parent::setUp();
 
-    $this->installSchema('taxonomy', array('taxonomy_term_data', 'taxonomy_term_hierarchy'));
+    $this->installEntitySchema('taxonomy_term');
 
     // We want a taxonomy term reference field. It needs a vocabulary, terms,
     // a field and an instance. First, create the vocabulary.
diff --git a/core/modules/system/src/Tests/Entity/EntityQueryTest.php b/core/modules/system/src/Tests/Entity/EntityQueryTest.php
index 07ee0e921abc..b3cb9f7f06b7 100644
--- a/core/modules/system/src/Tests/Entity/EntityQueryTest.php
+++ b/core/modules/system/src/Tests/Entity/EntityQueryTest.php
@@ -57,7 +57,9 @@ public static function getInfo() {
 
   function setUp() {
     parent::setUp();
-    $this->installSchema('entity_test', array('entity_test_mulrev', 'entity_test_mulrev_revision', 'entity_test_mulrev_property_data', 'entity_test_mulrev_property_revision'));
+
+    $this->installEntitySchema('entity_test_mulrev');
+
     $this->installConfig(array('language'));
 
     $figures = drupal_strtolower($this->randomName());
diff --git a/core/modules/system/src/Tests/Entity/EntityUUIDTest.php b/core/modules/system/src/Tests/Entity/EntityUUIDTest.php
index ec7134c49bca..a0ec72627271 100644
--- a/core/modules/system/src/Tests/Entity/EntityUUIDTest.php
+++ b/core/modules/system/src/Tests/Entity/EntityUUIDTest.php
@@ -23,16 +23,9 @@ public static function getInfo() {
   public function setUp() {
     parent::setUp();
 
-    $this->installSchema('entity_test', array(
-      'entity_test_mul',
-      'entity_test_mul_property_data',
-      'entity_test_rev',
-      'entity_test_rev_revision',
-      'entity_test_mulrev',
-      'entity_test_mulrev_revision',
-      'entity_test_mulrev_property_data',
-      'entity_test_mulrev_property_revision',
-    ));
+    $this->installEntitySchema('entity_test_rev');
+    $this->installEntitySchema('entity_test_mul');
+    $this->installEntitySchema('entity_test_mulrev');
   }
 
   /**
diff --git a/core/modules/system/src/Tests/Entity/EntityUnitTestBase.php b/core/modules/system/src/Tests/Entity/EntityUnitTestBase.php
index 8ea9daa67fcc..24a4de9810bb 100644
--- a/core/modules/system/src/Tests/Entity/EntityUnitTestBase.php
+++ b/core/modules/system/src/Tests/Entity/EntityUnitTestBase.php
@@ -42,9 +42,11 @@ public function setUp() {
     $this->entityManager = $this->container->get('entity.manager');
     $this->state = $this->container->get('state');
 
-    $this->installSchema('user', array('users', 'users_roles'));
     $this->installSchema('system', 'sequences');
-    $this->installSchema('entity_test', 'entity_test');
+
+    $this->installEntitySchema('user');
+    $this->installEntitySchema('entity_test');
+
     $this->installConfig(array('field'));
   }
 
diff --git a/core/modules/system/src/Tests/Entity/EntityValidationTest.php b/core/modules/system/src/Tests/Entity/EntityValidationTest.php
index 09e1e54d6169..dceab23625a9 100644
--- a/core/modules/system/src/Tests/Entity/EntityValidationTest.php
+++ b/core/modules/system/src/Tests/Entity/EntityValidationTest.php
@@ -32,17 +32,10 @@ public static function getInfo() {
    */
   public function setUp() {
     parent::setUp();
-    $this->installSchema('user', array('users_data'));
-    $this->installSchema('entity_test', array(
-      'entity_test_mul',
-      'entity_test_mul_property_data',
-      'entity_test_rev',
-      'entity_test_rev_revision',
-      'entity_test_mulrev',
-      'entity_test_mulrev_revision',
-      'entity_test_mulrev_property_data',
-      'entity_test_mulrev_property_revision'
-    ));
+
+    $this->installEntitySchema('entity_test_rev');
+    $this->installEntitySchema('entity_test_mul');
+    $this->installEntitySchema('entity_test_mulrev');
 
     // Create the test field.
     entity_test_install();
diff --git a/core/modules/system/src/Tests/Entity/FieldAccessTest.php b/core/modules/system/src/Tests/Entity/FieldAccessTest.php
index 7395dfabab06..d72b297541e3 100644
--- a/core/modules/system/src/Tests/Entity/FieldAccessTest.php
+++ b/core/modules/system/src/Tests/Entity/FieldAccessTest.php
@@ -44,8 +44,9 @@ protected function setUp() {
     // Install field configuration.
     $this->installConfig(array('field'));
     // The users table is needed for creating dummy user accounts.
-    $this->installSchema('user', array('users'));
+    $this->installEntitySchema('user');
     // Register entity_test text field.
+    module_load_install('entity_test');
     entity_test_install();
   }
 
diff --git a/core/modules/system/src/Tests/Entity/FieldSqlStorageTest.php b/core/modules/system/src/Tests/Entity/FieldSqlStorageTest.php
index a030b7077530..c252acd01fbf 100644
--- a/core/modules/system/src/Tests/Entity/FieldSqlStorageTest.php
+++ b/core/modules/system/src/Tests/Entity/FieldSqlStorageTest.php
@@ -66,7 +66,8 @@ public static function getInfo() {
 
   function setUp() {
     parent::setUp();
-    $this->installSchema('entity_test', array('entity_test_rev', 'entity_test_rev_revision'));
+
+    $this->installEntitySchema('entity_test_rev');
     $entity_type = 'entity_test_rev';
 
     $this->field_name = strtolower($this->randomName());
diff --git a/core/modules/system/src/Tests/TypedData/TypedDataTest.php b/core/modules/system/src/Tests/TypedData/TypedDataTest.php
index 5893f7b633db..37c4af9e73ed 100644
--- a/core/modules/system/src/Tests/TypedData/TypedDataTest.php
+++ b/core/modules/system/src/Tests/TypedData/TypedDataTest.php
@@ -44,7 +44,7 @@ public static function getInfo() {
   public function setUp() {
     parent::setup();
 
-    $this->installSchema('file', array('file_managed', "file_usage"));
+    $this->installEntitySchema('file');
     $this->typedDataManager = $this->container->get('typed_data_manager');
   }
 
diff --git a/core/modules/system/tests/modules/database_test/database_test.install b/core/modules/system/tests/modules/database_test/database_test.install
index 866d453fe145..7c74c1c4be64 100644
--- a/core/modules/system/tests/modules/database_test/database_test.install
+++ b/core/modules/system/tests/modules/database_test/database_test.install
@@ -245,5 +245,34 @@ function database_test_schema() {
     ),
   );
 
+  $schema['test_composite_primary'] = array(
+    'description' => 'Basic test table with a composite primary key',
+    'fields' => array(
+      'name' => array(
+        'description' => "A person's name",
+        'type' => 'varchar',
+        'length' => 50,
+        'not null' => TRUE,
+        'default' => '',
+        'binary' => TRUE,
+      ),
+      'age' => array(
+        'description' => "The person's age",
+        'type' => 'int',
+        'unsigned' => TRUE,
+        'not null' => TRUE,
+        'default' => 0,
+      ),
+      'job' => array(
+        'description' => "The person's job",
+        'type' => 'varchar',
+        'length' => 255,
+        'not null' => TRUE,
+        'default' => 'Undefined',
+      ),
+    ),
+    'primary key' => array('name', 'age'),
+  );
+
   return $schema;
 }
diff --git a/core/modules/system/tests/modules/entity_test/entity_test.install b/core/modules/system/tests/modules/entity_test/entity_test.install
index 9e4802956ed6..015b06765e39 100644
--- a/core/modules/system/tests/modules/entity_test/entity_test.install
+++ b/core/modules/system/tests/modules/entity_test/entity_test.install
@@ -42,7 +42,7 @@ function entity_test_install() {
  */
 function entity_test_schema() {
   // Schema for simple entity.
-  $schema['entity_test'] = array(
+  $schema['entity_test_example'] = array(
     'description' => 'Stores entity_test items.',
     'fields' => array(
       'id' => array(
@@ -50,392 +50,8 @@ function entity_test_schema() {
         'not null' => TRUE,
         'description' => 'Primary Key: Unique entity-test item ID.',
       ),
-      'uuid' => array(
-        'description' => 'Unique Key: Universally unique identifier for this entity.',
-        'type' => 'varchar',
-        'length' => 128,
-        'not null' => FALSE,
-      ),
-      'type' => array(
-        'description' => 'The bundle of the test entity.',
-        'type' => 'varchar',
-        'length' => 32,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-      'langcode' => array(
-        'description' => 'The {language}.langcode of the original variant of this test entity.',
-        'type' => 'varchar',
-        'length' => 12,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-      'name' => array(
-        'description' => 'The name of the test entity.',
-        'type' => 'varchar',
-        'length' => 32,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-      'user_id' => array(
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => FALSE,
-        'default' => NULL,
-        'description' => 'The {users}.uid of the associated user.',
-      ),
     ),
     'primary key' => array('id'),
-    'unique keys' => array(
-      'uuid' => array('uuid'),
-    ),
   );
-
-  // Schema for entity with revisions.
-  $schema['entity_test_rev'] = array(
-    'description' => 'Stores entity_test_rev items.',
-    'fields' => array(
-      'id' => array(
-        'type' => 'serial',
-        'not null' => TRUE,
-        'description' => 'Primary Key: Unique entity-test item ID.',
-      ),
-      'revision_id' => array(
-        'description' => 'The current {entity_test_rev_property_revision}.revision_id version identifier.',
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'default' => 0,
-      ),
-      'uuid' => array(
-        'description' => 'Unique Key: Universally unique identifier for this entity.',
-        'type' => 'varchar',
-        'length' => 128,
-        'not null' => FALSE,
-      ),
-      'type' => array(
-        'description' => 'The bundle of the test entity.',
-        'type' => 'varchar',
-        'length' => 32,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-      'name' => array(
-        'description' => 'The name of the test entity.',
-        'type' => 'varchar',
-        'length' => 32,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-      'user_id' => array(
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => FALSE,
-        'default' => NULL,
-        'description' => 'The {users}.uid of the associated user.',
-      ),
-    ),
-    'primary key' => array('id'),
-    'unique keys' => array(
-      'uuid' => array('uuid'),
-    ),
-  );
-  $schema['entity_test_rev_revision'] = array(
-    'description' => 'Stores entity_test_rev item property revisions.',
-    'fields' => array(
-      'id' => array(
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'description' => 'The {entity_test_rev}.id of the test entity.',
-      ),
-      'revision_id' => array(
-        'type' => 'serial',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'description' => 'The primary identifier for this version.',
-      ),
-      'langcode' => array(
-        'description' => 'The {language}.langcode of this variant of this test entity.',
-        'type' => 'varchar',
-        'length' => 12,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-      'name' => array(
-        'description' => 'The name of the test entity.',
-        'type' => 'varchar',
-        'length' => 32,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-      'user_id' => array(
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => FALSE,
-        'default' => NULL,
-        'description' => 'The {users}.uid of the associated user.',
-      ),
-    ),
-    'indexes' => array(
-      'user_id' => array('user_id'),
-    ),
-    'foreign keys' => array(
-      'user_id' => array('users' => 'uid'),
-      'id' => array('entity_test_rev' => 'id'),
-    ),
-    'primary key' => array('revision_id'),
-  );
-
-  // Schema for entity with data table.
-  $schema['entity_test_mul'] = array(
-    'description' => 'Stores entity_test_mul items.',
-    'fields' => array(
-      'id' => array(
-        'type' => 'serial',
-        'not null' => TRUE,
-        'description' => 'Primary Key: Unique entity-test item ID.',
-      ),
-      'uuid' => array(
-        'description' => 'Unique Key: Universally unique identifier for this entity.',
-        'type' => 'varchar',
-        'length' => 128,
-        'not null' => FALSE,
-      ),
-      'type' => array(
-        'description' => 'The bundle of the test entity.',
-        'type' => 'varchar',
-        'length' => 32,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-      'langcode' => array(
-        'description' => 'The {language}.langcode of the original variant of this test entity.',
-        'type' => 'varchar',
-        'length' => 12,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-    ),
-    'primary key' => array('id'),
-    'unique keys' => array(
-      'uuid' => array('uuid'),
-    ),
-  );
-  $schema['entity_test_mul_property_data'] = array(
-    'description' => 'Stores entity_test_mul item properties.',
-    'fields' => array(
-      'id' => array(
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'description' => 'The {entity_test_mul}.id of the test entity.',
-      ),
-      'langcode' => array(
-        'description' => 'The {language}.langcode of this variant of this test entity.',
-        'type' => 'varchar',
-        'length' => 12,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-      'default_langcode' => array(
-        'description' => 'Boolean indicating whether the current variant is in the original entity language.',
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 1,
-      ),
-      'name' => array(
-        'description' => 'The name of the test entity.',
-        'type' => 'varchar',
-        'length' => 32,
-        'not null' => FALSE,
-      ),
-      'user_id' => array(
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => FALSE,
-        'default' => NULL,
-        'description' => 'The {users}.uid of the associated user.',
-      ),
-    ),
-    'indexes' => array(
-      'user_id' => array('user_id'),
-    ),
-    'foreign keys' => array(
-      'user_id' => array('users' => 'uid'),
-      'id' => array('entity_test_mul' => 'id'),
-    ),
-    'primary key' => array('id', 'langcode'),
-  );
-
-  // Schema for entity with data table and revisions.
-  $schema['entity_test_mulrev'] = array(
-    'description' => 'Stores entity_test_mulrev items.',
-    'fields' => array(
-      'id' => array(
-        'type' => 'serial',
-        'not null' => TRUE,
-        'description' => 'Primary Key: Unique entity-test item ID.',
-      ),
-      'revision_id' => array(
-        'description' => 'The current {entity_test_mulrev_property_revision}.revision_id version identifier.',
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'default' => 0,
-      ),
-      'uuid' => array(
-        'description' => 'Unique Key: Universally unique identifier for this entity.',
-        'type' => 'varchar',
-        'length' => 128,
-        'not null' => FALSE,
-      ),
-      'type' => array(
-        'description' => 'The bundle of the test entity.',
-        'type' => 'varchar',
-        'length' => 32,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-    ),
-    'primary key' => array('id'),
-    'unique keys' => array(
-      'uuid' => array('uuid'),
-    ),
-  );
-  $schema['entity_test_mulrev_revision'] = array(
-    'description' => 'Stores entity_test_rev item property revisions.',
-    'fields' => array(
-      'id' => array(
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'description' => 'The {entity_test_rev}.id of the test entity.',
-      ),
-      'revision_id' => array(
-        'type' => 'serial',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'description' => 'The primary identifier for this version.',
-      ),
-      'langcode' => array(
-        'description' => 'The {language}.langcode of this variant of this test entity.',
-        'type' => 'varchar',
-        'length' => 12,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-    ),
-    'foreign keys' => array(
-      'id' => array('entity_test_rev' => 'id'),
-    ),
-    'primary key' => array('revision_id'),
-  );
-  $schema['entity_test_mulrev_property_data'] = array(
-    'description' => 'Stores entity_test_mulrev item properties.',
-    'fields' => array(
-      'id' => array(
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'description' => 'The {entity_test_mulrev}.id of the test entity.',
-      ),
-      'revision_id' => array(
-        'description' => 'The current {entity_test_mulrev_property_revision}.revision_id version identifier.',
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'default' => 0,
-      ),
-      'langcode' => array(
-        'description' => 'The {language}.langcode of this variant of this test entity.',
-        'type' => 'varchar',
-        'length' => 12,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-      'default_langcode' => array(
-        'description' => 'Boolean indicating whether the current variant is in the original entity language.',
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 1,
-      ),
-      'name' => array(
-        'description' => 'The name of the test entity.',
-        'type' => 'varchar',
-        'length' => 32,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-      'user_id' => array(
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => FALSE,
-        'default' => NULL,
-        'description' => 'The {users}.uid of the associated user.',
-      ),
-    ),
-    'indexes' => array(
-      'user_id' => array('user_id'),
-    ),
-    'foreign keys' => array(
-      'user_id' => array('users' => 'uid'),
-      'id' => array('entity_test_mulrev' => 'id'),
-    ),
-    'primary key' => array('id', 'langcode'),
-  );
-  $schema['entity_test_mulrev_property_revision'] = array(
-    'description' => 'Stores entity_test_mulrev item property revisions.',
-    'fields' => array(
-      'id' => array(
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'description' => 'The {entity_test_mulrev}.id of the test entity.',
-      ),
-      'revision_id' => array(
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'description' => 'The primary identifier for this version.',
-      ),
-      'langcode' => array(
-        'description' => 'The {language}.langcode of this variant of this test entity.',
-        'type' => 'varchar',
-        'length' => 12,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-      'default_langcode' => array(
-        'description' => 'Boolean indicating whether the current variant is in the original entity language.',
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 1,
-      ),
-      'name' => array(
-        'description' => 'The name of the test entity.',
-        'type' => 'varchar',
-        'length' => 32,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-      'user_id' => array(
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => FALSE,
-        'default' => NULL,
-        'description' => 'The {users}.uid of the associated user.',
-      ),
-    ),
-    'indexes' => array(
-      'user_id' => array('user_id'),
-    ),
-    'foreign keys' => array(
-      'user_id' => array('users' => 'uid'),
-      'id' => array('entity_test_mulrev' => 'id'),
-    ),
-    'primary key' => array('revision_id', 'langcode'),
-  );
-
   return $schema;
 }
diff --git a/core/modules/system/tests/modules/entity_test/src/Entity/EntityTestBaseFieldDisplay.php b/core/modules/system/tests/modules/entity_test/src/Entity/EntityTestBaseFieldDisplay.php
index 6a8badd9f681..0c0c753b8874 100644
--- a/core/modules/system/tests/modules/entity_test/src/Entity/EntityTestBaseFieldDisplay.php
+++ b/core/modules/system/tests/modules/entity_test/src/Entity/EntityTestBaseFieldDisplay.php
@@ -28,7 +28,6 @@
  *   entity_keys = {
  *     "id" = "id",
  *     "uuid" = "uuid",
- *     "revision" = "revision_id",
  *     "bundle" = "type"
  *   },
  *   links = {
diff --git a/core/modules/system/tests/modules/entity_test/src/Entity/EntityTestLabelCallback.php b/core/modules/system/tests/modules/entity_test/src/Entity/EntityTestLabelCallback.php
index 481711f231d7..e881b9aa1114 100644
--- a/core/modules/system/tests/modules/entity_test/src/Entity/EntityTestLabelCallback.php
+++ b/core/modules/system/tests/modules/entity_test/src/Entity/EntityTestLabelCallback.php
@@ -15,7 +15,6 @@
  *   label = @Translation("Entity test label callback"),
  *   field_cache = FALSE,
  *   base_table = "entity_test",
- *   revision_table = "entity_test_revision",
  *   label_callback = "entity_test_label_callback",
  *   fieldable = TRUE,
  *   entity_keys = {
diff --git a/core/modules/system/tests/modules/entity_test/src/Entity/EntityTestMul.php b/core/modules/system/tests/modules/entity_test/src/Entity/EntityTestMul.php
index 993026255a19..a8abda55d960 100644
--- a/core/modules/system/tests/modules/entity_test/src/Entity/EntityTestMul.php
+++ b/core/modules/system/tests/modules/entity_test/src/Entity/EntityTestMul.php
@@ -46,17 +46,4 @@
  */
 class EntityTestMul extends EntityTest {
 
-  /**
-   * {@inheritdoc}
-   */
-  public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
-    $fields = parent::baseFieldDefinitions($entity_type);
-
-    $fields['default_langcode'] = FieldDefinition::create('boolean')
-      ->setLabel(t('Default language'))
-      ->setDescription(t('Flag to indicate whether this is the default language.'));
-
-    return $fields;
-  }
-
 }
diff --git a/core/modules/system/tests/modules/entity_test/src/Entity/EntityTestMulRev.php b/core/modules/system/tests/modules/entity_test/src/Entity/EntityTestMulRev.php
index 21f6c5402f71..b30cbb11ed89 100644
--- a/core/modules/system/tests/modules/entity_test/src/Entity/EntityTestMulRev.php
+++ b/core/modules/system/tests/modules/entity_test/src/Entity/EntityTestMulRev.php
@@ -46,23 +46,4 @@
  */
 class EntityTestMulRev extends EntityTestRev {
 
-  /**
-   * {@inheritdoc}
-   */
-  public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
-    $fields = parent::baseFieldDefinitions($entity_type);
-
-    $fields['revision_id'] = FieldDefinition::create('integer')
-      ->setLabel(t('Revision ID'))
-      ->setDescription(t('The version id of the test entity.'))
-      ->setReadOnly(TRUE)
-      ->setSetting('unsigned', TRUE);
-
-    $fields['default_langcode'] = FieldDefinition::create('boolean')
-      ->setLabel(t('Default language'))
-      ->setDescription(t('Flag to indicate whether this is the default language.'));
-
-    return $fields;
-  }
-
 }
diff --git a/core/modules/taxonomy/src/Entity/Term.php b/core/modules/taxonomy/src/Entity/Term.php
index 510524ab3158..8b6996a00718 100644
--- a/core/modules/taxonomy/src/Entity/Term.php
+++ b/core/modules/taxonomy/src/Entity/Term.php
@@ -11,6 +11,7 @@
 use Drupal\Core\Entity\EntityStorageInterface;
 use Drupal\Core\Entity\EntityTypeInterface;
 use Drupal\Core\Field\FieldDefinition;
+use Drupal\Core\Field\FieldStorageDefinitionInterface;
 use Drupal\Core\Language\Language;
 use Drupal\Core\TypedData\DataDefinition;
 use Drupal\taxonomy\TermInterface;
@@ -164,6 +165,7 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
     $fields['parent'] = FieldDefinition::create('integer')
       ->setLabel(t('Term Parents'))
       ->setDescription(t('The parents of this term.'))
+      ->setCardinality(FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED)
       // Save new terms with no parents by default.
       ->setSetting('default_value', 0)
       ->setSetting('unsigned', TRUE)
diff --git a/core/modules/taxonomy/src/TermStorage.php b/core/modules/taxonomy/src/TermStorage.php
index b7b920123115..381b0abd639c 100644
--- a/core/modules/taxonomy/src/TermStorage.php
+++ b/core/modules/taxonomy/src/TermStorage.php
@@ -8,6 +8,7 @@
 namespace Drupal\taxonomy;
 
 use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Entity\EntityTypeInterface;
 use Drupal\Core\Entity\Query\QueryInterface;
 use Drupal\Core\Entity\ContentEntityDatabaseStorage;
 
@@ -151,4 +152,103 @@ public function resetWeights($vid) {
       ->execute();
   }
 
+  /**
+   * {@inheritdoc}
+   */
+  public function getSchema() {
+    $schema = parent::getSchema();
+
+    // Marking the respective fields as NOT NULL makes the indexes more
+    // performant.
+    $schema['taxonomy_term_data']['fields']['weight']['not null'] = TRUE;
+    $schema['taxonomy_term_data']['fields']['name']['not null'] = TRUE;
+
+    unset($schema['taxonomy_term_data']['indexes']['field__vid']);
+    unset($schema['taxonomy_term_data']['indexes']['field__description__format']);
+    $schema['taxonomy_term_data']['indexes'] += array(
+      'taxonomy_term__tree' => array('vid', 'weight', 'name'),
+      'taxonomy_term__vid_name' => array('vid', 'name'),
+      'taxonomy_term__name' => array('name'),
+    );
+
+    $schema['taxonomy_term_hierarchy'] = array(
+      'description' => 'Stores the hierarchical relationship between terms.',
+      'fields' => array(
+        'tid' => array(
+          'type' => 'int',
+          'unsigned' => TRUE,
+          'not null' => TRUE,
+          'default' => 0,
+          'description' => 'Primary Key: The {taxonomy_term_data}.tid of the term.',
+        ),
+        'parent' => array(
+          'type' => 'int',
+          'unsigned' => TRUE,
+          'not null' => TRUE,
+          'default' => 0,
+          'description' => "Primary Key: The {taxonomy_term_data}.tid of the term's parent. 0 indicates no parent.",
+        ),
+      ),
+      'indexes' => array(
+        'parent' => array('parent'),
+      ),
+      'foreign keys' => array(
+        'taxonomy_term_data' => array(
+          'table' => 'taxonomy_term_data',
+          'columns' => array('tid' => 'tid'),
+        ),
+      ),
+      'primary key' => array('tid', 'parent'),
+    );
+
+    $schema['taxonomy_index'] = array(
+      'description' => 'Maintains denormalized information about node/term relationships.',
+      'fields' => array(
+        'nid' => array(
+          'description' => 'The {node}.nid this record tracks.',
+          'type' => 'int',
+          'unsigned' => TRUE,
+          'not null' => TRUE,
+          'default' => 0,
+        ),
+        'tid' => array(
+          'description' => 'The term ID.',
+          'type' => 'int',
+          'unsigned' => TRUE,
+          'not null' => TRUE,
+          'default' => 0,
+        ),
+        'sticky' => array(
+          'description' => 'Boolean indicating whether the node is sticky.',
+          'type' => 'int',
+          'not null' => FALSE,
+          'default' => 0,
+          'size' => 'tiny',
+        ),
+        'created' => array(
+          'description' => 'The Unix timestamp when the node was created.',
+          'type' => 'int',
+          'not null' => TRUE,
+          'default'=> 0,
+        ),
+      ),
+      'primary key' => array('nid', 'tid'),
+      'indexes' => array(
+        'term_node' => array('tid', 'sticky', 'created'),
+      ),
+      'foreign keys' => array(
+        'tracked_node' => array(
+          'table' => 'node',
+          'columns' => array('nid' => 'nid'),
+        ),
+        'term' => array(
+          'table' => 'taxonomy_term_data',
+          'columns' => array('tid' => 'tid'),
+        ),
+      ),
+    );
+
+    return $schema;
+  }
+
 }
diff --git a/core/modules/taxonomy/src/Tests/TaxonomyTermReferenceItemTest.php b/core/modules/taxonomy/src/Tests/TaxonomyTermReferenceItemTest.php
index 0a67140961df..78c877ffe5fa 100644
--- a/core/modules/taxonomy/src/Tests/TaxonomyTermReferenceItemTest.php
+++ b/core/modules/taxonomy/src/Tests/TaxonomyTermReferenceItemTest.php
@@ -42,8 +42,7 @@ public static function getInfo() {
 
   public function setUp() {
     parent::setUp();
-    $this->installSchema('taxonomy', 'taxonomy_term_data');
-    $this->installSchema('taxonomy', 'taxonomy_term_hierarchy');
+    $this->installEntitySchema('taxonomy_term');
 
     $vocabulary = entity_create('taxonomy_vocabulary', array(
       'name' => $this->randomName(),
diff --git a/core/modules/taxonomy/src/Tests/TermTranslationUITest.php b/core/modules/taxonomy/src/Tests/TermTranslationUITest.php
index a027ade04b09..c51428c22f23 100644
--- a/core/modules/taxonomy/src/Tests/TermTranslationUITest.php
+++ b/core/modules/taxonomy/src/Tests/TermTranslationUITest.php
@@ -121,7 +121,10 @@ function testTranslateLinkVocabularyAdminPage() {
     $this->admin_user = $this->drupalCreateUser(array_merge(parent::getTranslatorPermissions(), array('access administration pages', 'administer taxonomy')));
     $this->drupalLogin($this->admin_user);
 
-    $translatable_tid = $this->createEntity(array(), $this->langcodes[0], $this->vocabulary->id());
+    $values = array(
+      'name' => $this->randomName(),
+    );
+    $translatable_tid = $this->createEntity($values, $this->langcodes[0], $this->vocabulary->id());
 
     // Create an untranslatable vocabulary.
     $untranslatable_vocabulary = entity_create('taxonomy_vocabulary', array(
@@ -133,7 +136,10 @@ function testTranslateLinkVocabularyAdminPage() {
     ));
     $untranslatable_vocabulary->save();
 
-    $untranslatable_tid = $this->createEntity(array(), $this->langcodes[0], $untranslatable_vocabulary->id());
+    $values = array(
+      'name' => $this->randomName(),
+    );
+    $untranslatable_tid = $this->createEntity($values, $this->langcodes[0], $untranslatable_vocabulary->id());
 
     // Verify translation links.
     $this->drupalGet('admin/structure/taxonomy/manage/' .  $this->vocabulary->id() . '/overview');
diff --git a/core/modules/taxonomy/src/Tests/TermValidationTest.php b/core/modules/taxonomy/src/Tests/TermValidationTest.php
index 737f662a24fa..f54540308851 100644
--- a/core/modules/taxonomy/src/Tests/TermValidationTest.php
+++ b/core/modules/taxonomy/src/Tests/TermValidationTest.php
@@ -34,7 +34,7 @@ public static function getInfo() {
    */
   public function setUp() {
     parent::setUp();
-    $this->installSchema('taxonomy', array('taxonomy_term_data'));
+    $this->installEntitySchema('taxonomy_term');
   }
 
   /**
diff --git a/core/modules/taxonomy/taxonomy.install b/core/modules/taxonomy/taxonomy.install
deleted file mode 100644
index ae5dc7fe5c31..000000000000
--- a/core/modules/taxonomy/taxonomy.install
+++ /dev/null
@@ -1,164 +0,0 @@
-<?php
-
-/**
- * @file
- * Install, update and uninstall functions for the taxonomy module.
- */
-
-use Drupal\Core\Entity\EntityTypeInterface;
-
-/**
- * Implements hook_schema().
- */
-function taxonomy_schema() {
-  $schema['taxonomy_term_data'] = array(
-    'description' => 'Stores term information.',
-    'fields' => array(
-      'tid' => array(
-        'type' => 'serial',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'description' => 'Primary Key: Unique term ID.',
-      ),
-      'uuid' => array(
-        'description' => 'Unique Key: Universally unique identifier for this entity.',
-        'type' => 'varchar',
-        'length' => 128,
-        'not null' => FALSE,
-      ),
-      'vid' => array(
-        'type' => 'varchar',
-        'length' => EntityTypeInterface::BUNDLE_MAX_LENGTH,
-        'not null' => TRUE,
-        'default' => '',
-        'description' => 'The ID of the vocabulary to which the term is assigned.',
-      ),
-      'langcode' => array(
-        'description' => 'The {language}.langcode of this term.',
-        'type' => 'varchar',
-        'length' => 12,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-      'name' => array(
-        'type' => 'varchar',
-        'length' => 255,
-        'not null' => TRUE,
-        'default' => '',
-        'description' => 'The term name.',
-      ),
-      'description__value' => array(
-        'type' => 'text',
-        'not null' => FALSE,
-        'size' => 'big',
-        'description' => 'A description of the term.',
-      ),
-      'description__format' => array(
-        'type' => 'varchar',
-        'length' => 255,
-        'not null' => FALSE,
-        'description' => 'The filter format ID of the description.',
-      ),
-      'weight' => array(
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 0,
-        'description' => 'The weight of this term in relation to other terms.',
-      ),
-      'changed' => array(
-        'description' => 'The Unix timestamp when the term was most recently saved.',
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 0,
-      ),
-    ),
-    'primary key' => array('tid'),
-    'unique keys' => array(
-      'uuid' => array('uuid'),
-    ),
-    'indexes' => array(
-      'taxonomy_tree' => array('vid', 'weight', 'name'),
-      'vid_name' => array('vid', 'name'),
-      'name' => array('name'),
-    ),
-  );
-
-  $schema['taxonomy_term_hierarchy'] = array(
-    'description' => 'Stores the hierarchical relationship between terms.',
-    'fields' => array(
-      'tid' => array(
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'default' => 0,
-        'description' => 'Primary Key: The {taxonomy_term_data}.tid of the term.',
-      ),
-      'parent' => array(
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'default' => 0,
-        'description' => "Primary Key: The {taxonomy_term_data}.tid of the term's parent. 0 indicates no parent.",
-      ),
-    ),
-    'indexes' => array(
-      'parent' => array('parent'),
-    ),
-    'foreign keys' => array(
-      'taxonomy_term_data' => array(
-        'table' => 'taxonomy_term_data',
-        'columns' => array('tid' => 'tid'),
-      ),
-    ),
-    'primary key' => array('tid', 'parent'),
-  );
-
-  $schema['taxonomy_index'] = array(
-    'description' => 'Maintains denormalized information about node/term relationships.',
-    'fields' => array(
-      'nid' => array(
-        'description' => 'The {node}.nid this record tracks.',
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'default' => 0,
-      ),
-      'tid' => array(
-         'description' => 'The term ID.',
-         'type' => 'int',
-         'unsigned' => TRUE,
-         'not null' => TRUE,
-         'default' => 0,
-      ),
-      'sticky' => array(
-        'description' => 'Boolean indicating whether the node is sticky.',
-        'type' => 'int',
-        'not null' => FALSE,
-        'default' => 0,
-        'size' => 'tiny',
-      ),
-      'created' => array(
-        'description' => 'The Unix timestamp when the node was created.',
-        'type' => 'int',
-        'not null' => TRUE,
-        'default'=> 0,
-      ),
-    ),
-    'primary key' => array('nid', 'tid'),
-    'indexes' => array(
-      'term_node' => array('tid', 'sticky', 'created'),
-    ),
-    'foreign keys' => array(
-      'tracked_node' => array(
-        'table' => 'node',
-        'columns' => array('nid' => 'nid'),
-      ),
-      'term' => array(
-        'table' => 'taxonomy_term_data',
-        'columns' => array('tid' => 'tid'),
-      ),
-    ),
-  );
-
-  return $schema;
-}
diff --git a/core/modules/text/src/Tests/Formatter/TextPlainUnitTest.php b/core/modules/text/src/Tests/Formatter/TextPlainUnitTest.php
index 1c35b242c503..3357d1d35738 100644
--- a/core/modules/text/src/Tests/Formatter/TextPlainUnitTest.php
+++ b/core/modules/text/src/Tests/Formatter/TextPlainUnitTest.php
@@ -48,7 +48,7 @@ function setUp() {
 
     // Configure the theme system.
     $this->installConfig(array('system', 'field'));
-    $this->installSchema('entity_test', 'entity_test');
+    $this->installEntitySchema('entity_test');
 
     // @todo Add helper methods for all of the following.
 
diff --git a/core/modules/text/src/Tests/TextWithSummaryItemTest.php b/core/modules/text/src/Tests/TextWithSummaryItemTest.php
index 68a6179a0d33..c98245e2a22d 100644
--- a/core/modules/text/src/Tests/TextWithSummaryItemTest.php
+++ b/core/modules/text/src/Tests/TextWithSummaryItemTest.php
@@ -50,7 +50,7 @@ public static function getInfo() {
   public function setUp() {
     parent::setUp();
 
-    $this->installSchema('entity_test', array('entity_test_rev', 'entity_test_rev_revision'));
+    $this->installEntitySchema('entity_test_rev');
 
     // Create the necessary formats.
     $this->installConfig(array('filter'));
diff --git a/core/modules/user/src/AccountForm.php b/core/modules/user/src/AccountForm.php
index 42a2292666e1..5ac1c00a2ae9 100644
--- a/core/modules/user/src/AccountForm.php
+++ b/core/modules/user/src/AccountForm.php
@@ -378,9 +378,12 @@ public function validate(array $form, array &$form_state) {
       // Move text value for user signature into 'signature'.
       $form_state['values']['signature'] = $form_state['values']['signature']['value'];
 
-      $user_schema = drupal_get_schema('users');
-      if (drupal_strlen($form_state['values']['signature']) > $user_schema['fields']['signature']['length']) {
-        $this->setFormError('signature', $form_state, $this->t('The signature is too long: it must be %max characters or less.', array('%max' => $user_schema['fields']['signature']['length'])));
+      // @todo Make the user signature field use a widget to benefit from
+      //   automatic typed data validation in https://drupal.org/node/2227381.
+      $field_definitions = $this->entityManager->getFieldDefinitions('user', $this->getEntity()->bundle());
+      $max_length = $field_definitions['signature']->getSetting('max_length');
+      if (drupal_strlen($form_state['values']['signature']) > $max_length) {
+        $this->setFormError('signature', $form_state, $this->t('The signature is too long: it must be %max characters or less.', array('%max' => $max_length)));
       }
     }
   }
diff --git a/core/modules/user/src/Entity/User.php b/core/modules/user/src/Entity/User.php
index 25eb6411a968..6c0fb85c2239 100644
--- a/core/modules/user/src/Entity/User.php
+++ b/core/modules/user/src/Entity/User.php
@@ -18,6 +18,9 @@
 /**
  * Defines the user entity class.
  *
+ * The base table name here is plural, despite Drupal table naming standards,
+ * because "user" is a reserved word in many databases.
+ *
  * @ContentEntityType(
  *   id = "user",
  *   label = @Translation("User"),
@@ -500,8 +503,11 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
 
     $fields['status'] = FieldDefinition::create('boolean')
       ->setLabel(t('User status'))
-      ->setDescription(t('Whether the user is active (1) or blocked (0).'))
-      ->setSetting('default_value', 1);
+      ->setDescription(t('Whether the user is active or blocked.'))
+      // @todo As the status has access implications users should be created as
+      //   blocked by default and activated explicitly if needed. See
+      //   https://drupal.org/node/2248969.
+      ->setSetting('default_value', TRUE);
 
     $fields['created'] = FieldDefinition::create('created')
       ->setLabel(t('Created'))
@@ -525,6 +531,7 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
     // @todo Convert this to entity_reference_field, see
     // https://drupal.org/node/2044859.
     $fields['roles'] = FieldDefinition::create('string')
+      ->setCustomStorage(TRUE)
       ->setLabel(t('Roles'))
       ->setCardinality(FieldDefinitionInterface::CARDINALITY_UNLIMITED)
       ->setDescription(t('The roles the user has.'));
diff --git a/core/modules/user/src/Tests/UserAdminTest.php b/core/modules/user/src/Tests/UserAdminTest.php
index d8d384d9be47..f71d1e69bcfb 100644
--- a/core/modules/user/src/Tests/UserAdminTest.php
+++ b/core/modules/user/src/Tests/UserAdminTest.php
@@ -34,13 +34,22 @@ public static function getInfo() {
    */
   function testUserAdmin() {
     $user_a = $this->drupalCreateUser();
+    $user_a->name = 'User A';
     $user_a->mail = $this->randomName() . '@example.com';
     $user_a->save();
     $user_b = $this->drupalCreateUser(array('administer taxonomy'));
+    $user_b->name = 'User B';
+    $user_b->save();
     $user_c = $this->drupalCreateUser(array('administer taxonomy'));
+    $user_c->name = 'User C';
+    $user_c->save();
 
     // Create admin user to delete registered user.
     $admin_user = $this->drupalCreateUser(array('administer users'));
+    // Use a predictable name so that we can reliably order the user admin page
+    // by name.
+    $admin_user->name = 'Admin user';
+    $admin_user->save();
     $this->drupalLogin($admin_user);
     $this->drupalGet('admin/people');
     $this->assertText($user_a->getUsername(), 'Found user A on admin users page');
@@ -86,8 +95,12 @@ function testUserAdmin() {
     $this->assertTrue($account->isActive(), 'User C not blocked');
     $edit = array();
     $edit['action'] = 'user_block_user_action';
-    $edit['user_bulk_form[1]'] = TRUE;
-    $this->drupalPostForm('admin/people', $edit, t('Apply'));
+    $edit['user_bulk_form[4]'] = TRUE;
+    $this->drupalPostForm('admin/people', $edit, t('Apply'), array(
+      // Sort the table by username so that we know reliably which user will be
+      // targeted with the blocking action.
+      'query' => array('order' => 'name', 'sort' => 'asc')
+    ));
     $account = user_load($user_c->id(), TRUE);
     $this->assertTrue($account->isBlocked(), 'User C blocked');
 
@@ -100,8 +113,12 @@ function testUserAdmin() {
     // Test unblocking of a user from /admin/people page and sending of activation mail
     $editunblock = array();
     $editunblock['action'] = 'user_unblock_user_action';
-    $editunblock['user_bulk_form[1]'] = TRUE;
-    $this->drupalPostForm('admin/people', $editunblock, t('Apply'));
+    $editunblock['user_bulk_form[4]'] = TRUE;
+    $this->drupalPostForm('admin/people', $editunblock, t('Apply'), array(
+      // Sort the table by username so that we know reliably which user will be
+      // targeted with the blocking action.
+      'query' => array('order' => 'name', 'sort' => 'asc')
+    ));
     $account = user_load($user_c->id(), TRUE);
     $this->assertTrue($account->isActive(), 'User C unblocked');
     $this->assertMail("to", $account->getEmail(), "Activation mail sent to user C");
diff --git a/core/modules/user/src/Tests/UserInstallTest.php b/core/modules/user/src/Tests/UserInstallTest.php
index 7014a0335515..9fdb8db667bf 100644
--- a/core/modules/user/src/Tests/UserInstallTest.php
+++ b/core/modules/user/src/Tests/UserInstallTest.php
@@ -37,7 +37,9 @@ public static function getInfo() {
    */
   protected function setUp() {
     parent::setUp();
-    $this->installSchema('user', array('users'));
+    $this->container->get('module_handler')->loadInclude('user', 'install');
+    $this->installEntitySchema('user');
+    user_install();
   }
 
 
@@ -45,7 +47,6 @@ protected function setUp() {
    * Test that the initial users have correct values.
    */
   public function testUserInstall() {
-    user_install();
     $anon = db_query('SELECT * FROM {users} WHERE uid = 0')->fetchObject();
     $admin = db_query('SELECT * FROM {users} WHERE uid = 1')->fetchObject();
     $this->assertFalse(empty($anon->uuid), 'Anon user has a UUID');
diff --git a/core/modules/user/src/Tests/UserValidationTest.php b/core/modules/user/src/Tests/UserValidationTest.php
index 499877e409cb..06d42b98a60f 100644
--- a/core/modules/user/src/Tests/UserValidationTest.php
+++ b/core/modules/user/src/Tests/UserValidationTest.php
@@ -36,7 +36,7 @@ public static function getInfo() {
    */
   public function setUp() {
     parent::setUp();
-    $this->installSchema('user', array('users'));
+    $this->installEntitySchema('user');
     $this->installSchema('system', array('sequences'));
   }
 
diff --git a/core/modules/user/src/Tests/Views/UserUnitTestBase.php b/core/modules/user/src/Tests/Views/UserUnitTestBase.php
index eafc620f47d8..16ba123c66ea 100644
--- a/core/modules/user/src/Tests/Views/UserUnitTestBase.php
+++ b/core/modules/user/src/Tests/Views/UserUnitTestBase.php
@@ -48,7 +48,7 @@ protected function setUp() {
 
     ViewTestData::createTestViews(get_class($this), array('user_test_views'));
 
-    $this->installSchema('user', array('users', 'users_roles'));
+    $this->installEntitySchema('user');
     $this->installSchema('system', 'sequences');
 
     $entity_manager = $this->container->get('entity.manager');
diff --git a/core/modules/user/src/UserStorage.php b/core/modules/user/src/UserStorage.php
index d5d91ca4d7b2..44d323fbec18 100644
--- a/core/modules/user/src/UserStorage.php
+++ b/core/modules/user/src/UserStorage.php
@@ -47,15 +47,13 @@ class UserStorage extends ContentEntityDatabaseStorage implements UserStorageInt
    *   The database connection to be used.
    * @param \Drupal\Core\Entity\EntityManagerInterface $entity_manager
    *   The entity manager.
-   * @param \Drupal\Component\Uuid\UuidInterface $uuid_service
-   *   The UUID Service.
    * @param \Drupal\Core\Password\PasswordInterface $password
    *   The password hashing service.
    * @param \Drupal\user\UserDataInterface $user_data
    *   The user data service.
    */
-  public function __construct(EntityTypeInterface $entity_type, Connection $database, EntityManagerInterface $entity_manager, UuidInterface $uuid_service, PasswordInterface $password, UserDataInterface $user_data) {
-    parent::__construct($entity_type, $database, $entity_manager, $uuid_service);
+  public function __construct(EntityTypeInterface $entity_type, Connection $database, EntityManagerInterface $entity_manager, PasswordInterface $password, UserDataInterface $user_data) {
+    parent::__construct($entity_type, $database, $entity_manager);
 
     $this->password = $password;
     $this->userData = $user_data;
@@ -69,7 +67,6 @@ public static function createInstance(ContainerInterface $container, EntityTypeI
       $entity_type,
       $container->get('database'),
       $container->get('entity.manager'),
-      $container->get('uuid'),
       $container->get('password'),
       $container->get('user.data')
     );
@@ -154,4 +151,59 @@ public function updateLastLoginTimestamp(UserInterface $account) {
       ->execute();
   }
 
+  /**
+   * {@inheritdoc}
+   */
+  public function getSchema() {
+    $schema = parent::getSchema();
+
+    // Marking the respective fields as NOT NULL makes the indexes more
+    // performant.
+    $schema['users']['fields']['access']['not null'] = TRUE;
+    $schema['users']['fields']['created']['not null'] = TRUE;
+    $schema['users']['fields']['name']['not null'] = TRUE;
+
+    // The "users" table does not use serial identifiers.
+    $schema['users']['fields']['uid']['type'] = 'int';
+    $schema['users']['indexes'] += array(
+      'user__access' => array('access'),
+      'user__created' => array('created'),
+      'user__mail' => array('mail'),
+    );
+    $schema['users']['unique keys'] += array(
+      'user__name' => array('name'),
+    );
+
+    $schema['users_roles'] = array(
+      'description' => 'Maps users to roles.',
+      'fields' => array(
+        'uid' => array(
+          'type' => 'int',
+          'unsigned' => TRUE,
+          'not null' => TRUE,
+          'default' => 0,
+          'description' => 'Primary Key: {users}.uid for user.',
+        ),
+        'rid' => array(
+          'type' => 'varchar',
+          'length' => 64,
+          'not null' => TRUE,
+          'description' => 'Primary Key: ID for the role.',
+        ),
+      ),
+      'primary key' => array('uid', 'rid'),
+      'indexes' => array(
+        'rid' => array('rid'),
+      ),
+      'foreign keys' => array(
+        'user' => array(
+          'table' => 'users',
+          'columns' => array('uid' => 'uid'),
+        ),
+      ),
+    );
+
+    return $schema;
+  }
+
 }
diff --git a/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_filter_permission.yml b/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_filter_permission.yml
index b16cb3eb581e..8b62fc715407 100644
--- a/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_filter_permission.yml
+++ b/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_filter_permission.yml
@@ -115,7 +115,20 @@ display:
             group_items: {  }
           reduce_duplicates: '1'
           plugin_id: user_permissions
-      sorts: {  }
+      sorts:
+        uid:
+          id: uid
+          table: users
+          field: uid
+          relationship: none
+          group_type: group
+          admin_label: ''
+          order: ASC
+          exposed: false
+          expose:
+            label: ''
+          plugin_id: standard
+          provider: views
 human_name: test_filter_permission
 module: views
 id: test_filter_permission
diff --git a/core/modules/user/user.info.yml b/core/modules/user/user.info.yml
index 45a421a5ade5..dbdb52070655 100644
--- a/core/modules/user/user.info.yml
+++ b/core/modules/user/user.info.yml
@@ -6,3 +6,5 @@ version: VERSION
 core: 8.x
 required: true
 configure: user.admin_index
+dependencies:
+  - entity
diff --git a/core/modules/user/user.install b/core/modules/user/user.install
index 086a5a0ea4b7..e0658c5045f6 100644
--- a/core/modules/user/user.install
+++ b/core/modules/user/user.install
@@ -9,130 +9,6 @@
  * Implements hook_schema().
  */
 function user_schema() {
-  // The table name here is plural, despite Drupal table naming standards,
-  // because "user" is a reserved word in many databases.
-  $schema['users'] = array(
-    'description' => 'Stores user data.',
-    'fields' => array(
-      'uid' => array(
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'description' => 'Primary Key: Unique user ID.',
-        'default' => 0,
-      ),
-      'uuid' => array(
-        'description' => 'Unique Key: Universally unique identifier for this entity.',
-        'type' => 'varchar',
-        'length' => 128,
-        'not null' => FALSE,
-      ),
-      'name' => array(
-        'type' => 'varchar',
-        'length' => 60,
-        'not null' => TRUE,
-        'default' => '',
-        'description' => 'Unique user name.',
-      ),
-      'langcode' => array(
-        'type' => 'varchar',
-        'length' => 12,
-        'not null' => TRUE,
-        'default' => '',
-        'description' => "The {language}.langcode of the user's profile.",
-      ),
-      'pass' => array(
-        'type' => 'varchar',
-        'length' => 128,
-        'not null' => TRUE,
-        'default' => '',
-        'description' => "User's password (hashed).",
-      ),
-      'mail' => array(
-        'type' => 'varchar',
-        'length' => 254,
-        'not null' => FALSE,
-        'default' => '',
-        'description' => "User's e-mail address.",
-      ),
-      'signature' => array(
-        'type' => 'varchar',
-        'length' => 255,
-        'not null' => TRUE,
-        'default' => '',
-        'description' => "User's signature.",
-      ),
-      'signature_format' => array(
-        'type' => 'varchar',
-        'length' => 255,
-        'not null' => FALSE,
-        'description' => 'The filter format ID of the signature.',
-      ),
-      'created' => array(
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 0,
-        'description' => 'Timestamp for when user was created.',
-      ),
-      'access' => array(
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 0,
-        'description' => 'Timestamp for previous time user accessed the site.',
-      ),
-      'login' => array(
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 0,
-        'description' => "Timestamp for user's last login.",
-      ),
-      'status' => array(
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 0,
-        'size' => 'tiny',
-        'description' => 'Whether the user is active(1) or blocked(0).',
-      ),
-      'timezone' => array(
-        'type' => 'varchar',
-        'length' => 32,
-        'not null' => FALSE,
-        'description' => "User's time zone.",
-      ),
-      'preferred_langcode' => array(
-        'type' => 'varchar',
-        'length' => 12,
-        'not null' => TRUE,
-        'default' => '',
-        'description' => 'The {language}.langcode that the user prefers for receiving emails and viewing the site.',
-      ),
-      'preferred_admin_langcode' => array(
-        'type' => 'varchar',
-        'length' => 12,
-        'not null' => TRUE,
-        'default' => '',
-        'description' => 'The {language}.langcode that the user prefers for viewing administration pages.',
-      ),
-      'init' => array(
-        'type' => 'varchar',
-        'length' => 254,
-        'not null' => FALSE,
-        'default' => '',
-        'description' => 'E-mail address used for initial account creation.',
-      ),
-    ),
-    'indexes' => array(
-      'access' => array('access'),
-      'created' => array('created'),
-      'mail' => array('mail'),
-    ),
-    'unique keys' => array(
-      'uuid' => array('uuid'),
-      'name' => array('name'),
-    ),
-    'primary key' => array('uid'),
-  );
-
   $schema['users_data'] = array(
     'description' => 'Stores module data as key/value pairs per user.',
     'fields' => array(
@@ -181,35 +57,6 @@ function user_schema() {
     ),
   );
 
-  $schema['users_roles'] = array(
-    'description' => 'Maps users to roles.',
-    'fields' => array(
-      'uid' => array(
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'default' => 0,
-        'description' => 'Primary Key: {users}.uid for user.',
-      ),
-      'rid' => array(
-        'type' => 'varchar',
-        'length' => 64,
-        'not null' => TRUE,
-        'description' => 'Primary Key: ID for the role.',
-      ),
-    ),
-    'primary key' => array('uid', 'rid'),
-    'indexes' => array(
-      'rid' => array('rid'),
-    ),
-    'foreign keys' => array(
-      'user' => array(
-        'table' => 'users',
-        'columns' => array('uid' => 'uid'),
-      ),
-    ),
-  );
-
   return $schema;
 }
 
diff --git a/core/modules/views/src/Entity/View.php b/core/modules/views/src/Entity/View.php
index c3e19aa37924..87a56745062f 100644
--- a/core/modules/views/src/Entity/View.php
+++ b/core/modules/views/src/Entity/View.php
@@ -275,7 +275,10 @@ public function calculateDependencies() {
     // Ensure that the view is dependent on the module that provides the schema
     // for the base table.
     $schema = $this->drupalGetSchema($this->base_table);
-    if ($this->module != $schema['module']) {
+    // @todo Entity base tables are no longer registered in hook_schema(). Once
+    //   we automate the views data for entity types add the entity type
+    //   type provider as a dependency. See https://drupal.org/node/1740492.
+    if ($schema && $this->module != $schema['module']) {
       $this->addDependency('module', $schema['module']);
     }
 
@@ -283,7 +286,6 @@ public function calculateDependencies() {
     foreach (Views::getHandlerTypes() as $type) {
       $handler_types[] = $type['plural'];
     }
-
     foreach ($this->get('display') as $display) {
       // Collect all dependencies of all handlers.
       foreach ($handler_types as $handler_type) {
@@ -296,10 +298,10 @@ public function calculateDependencies() {
             // Add the additional dependencies from the handler configuration.
             if (!empty($handler['dependencies'])) {
               $this->addDependencies($handler['dependencies']);
-            }
           }
         }
       }
+    }
 
       // Collect all dependencies of plugins.
       foreach (Views::getPluginTypes('plugin') as $plugin_type) {
diff --git a/core/modules/views/src/Plugin/views/query/Sql.php b/core/modules/views/src/Plugin/views/query/Sql.php
index 175e7f44f8bb..5b51afd30956 100644
--- a/core/modules/views/src/Plugin/views/query/Sql.php
+++ b/core/modules/views/src/Plugin/views/query/Sql.php
@@ -1425,7 +1425,6 @@ function execute(ViewExecutable $view) {
 
         $result = $query->execute();
         $result->setFetchMode(\PDO::FETCH_CLASS, 'Drupal\views\ResultRow');
-
         $view->result = iterator_to_array($result);
 
         $view->pager->postExecute($view->result);
diff --git a/core/modules/views/src/Tests/Entity/RowEntityRenderersTest.php b/core/modules/views/src/Tests/Entity/RowEntityRenderersTest.php
index 869ad8835bf4..35c8c61138c1 100644
--- a/core/modules/views/src/Tests/Entity/RowEntityRenderersTest.php
+++ b/core/modules/views/src/Tests/Entity/RowEntityRenderersTest.php
@@ -56,8 +56,9 @@ public static function getInfo() {
   protected function setUp() {
     parent::setUp();
 
-    $this->installSchema('node', array('node', 'node_revision', 'node_field_data', 'node_field_revision', 'node_access'));
-    $this->installSchema('user', array('users'));
+    $this->installEntitySchema('node');
+    $this->installEntitySchema('user');
+    $this->installSchema('node', array('node_access'));
     $this->installConfig(array('node', 'language'));
 
     // The node.view route must exist when nodes are rendered.
diff --git a/core/modules/views/src/Tests/Handler/AreaTextTest.php b/core/modules/views/src/Tests/Handler/AreaTextTest.php
index 2ac78f844033..3ab29d76f101 100644
--- a/core/modules/views/src/Tests/Handler/AreaTextTest.php
+++ b/core/modules/views/src/Tests/Handler/AreaTextTest.php
@@ -38,7 +38,7 @@ protected function setUp() {
     parent::setUp();
 
     $this->installConfig(array('system', 'filter'));
-    $this->installSchema('user', array('users'));
+    $this->installEntitySchema('user');
   }
 
   public function testAreaText() {
diff --git a/core/modules/views/src/Tests/Handler/HandlerAliasTest.php b/core/modules/views/src/Tests/Handler/HandlerAliasTest.php
index caec4c7e109b..ac9b920174ae 100644
--- a/core/modules/views/src/Tests/Handler/HandlerAliasTest.php
+++ b/core/modules/views/src/Tests/Handler/HandlerAliasTest.php
@@ -35,7 +35,7 @@ public static function getInfo() {
   protected function setUp() {
     parent::setUp();
 
-    $this->installSchema('user', 'users');
+    $this->installEntitySchema('user');
   }
 
   /**
diff --git a/core/modules/views/src/Tests/Plugin/RelationshipJoinTestBase.php b/core/modules/views/src/Tests/Plugin/RelationshipJoinTestBase.php
index fae35159ce54..55426196c755 100644
--- a/core/modules/views/src/Tests/Plugin/RelationshipJoinTestBase.php
+++ b/core/modules/views/src/Tests/Plugin/RelationshipJoinTestBase.php
@@ -26,7 +26,7 @@ abstract class RelationshipJoinTestBase extends PluginUnitTestBase {
    * Overrides \Drupal\views\Tests\ViewUnitTestBase::setUpFixtures().
    */
   protected function setUpFixtures() {
-    $this->installSchema('user', array('users', 'users_roles'));
+    $this->installEntitySchema('user');
     $this->installConfig(array('user'));
     parent::setUpFixtures();
 
diff --git a/core/modules/views/src/Tests/Plugin/RowEntityTest.php b/core/modules/views/src/Tests/Plugin/RowEntityTest.php
index 0b406f5d7c7c..8cecbd19a61f 100644
--- a/core/modules/views/src/Tests/Plugin/RowEntityTest.php
+++ b/core/modules/views/src/Tests/Plugin/RowEntityTest.php
@@ -53,7 +53,7 @@ public static function getInfo() {
   protected function setUp() {
     parent::setUp();
 
-    $this->installSchema('taxonomy', array('taxonomy_term_data', 'taxonomy_term_hierarchy'));
+    $this->installEntitySchema('taxonomy_term');
     $this->installConfig(array('taxonomy'));
     \Drupal::service('router.builder')->rebuild();
   }
diff --git a/core/modules/views/src/Tests/QueryGroupByTest.php b/core/modules/views/src/Tests/QueryGroupByTest.php
index 7b7d0b789912..ff0c225bcd84 100644
--- a/core/modules/views/src/Tests/QueryGroupByTest.php
+++ b/core/modules/views/src/Tests/QueryGroupByTest.php
@@ -49,7 +49,7 @@ public static function getInfo() {
   protected function setUp() {
     parent::setUp();
 
-    $this->installSchema('entity_test', array('entity_test'));
+    $this->installEntitySchema('entity_test');
 
     $this->storage = $this->container->get('entity.manager')->getStorage('entity_test');
   }
diff --git a/core/modules/views/src/Tests/ViewExecutableTest.php b/core/modules/views/src/Tests/ViewExecutableTest.php
index 74787f1f953c..183e1afdf62e 100644
--- a/core/modules/views/src/Tests/ViewExecutableTest.php
+++ b/core/modules/views/src/Tests/ViewExecutableTest.php
@@ -84,10 +84,12 @@ public static function getInfo() {
   }
 
   protected function setUpFixtures() {
-    $this->installSchema('user', array('users'));
-    $this->installSchema('node', array('node', 'node_field_data'));
-    $this->installSchema('comment', array('comment', 'comment_entity_statistics'));
+    $this->installEntitySchema('user');
+    $this->installEntitySchema('node');
+    $this->installEntitySchema('comment');
+    $this->installSchema('comment', array('comment_entity_statistics'));
     $this->installConfig(array('field'));
+
     entity_create('node_type', array(
       'type' => 'page',
       'name' => 'Page',
diff --git a/core/tests/Drupal/Tests/Core/Entity/ContentEntityDatabaseStorageTest.php b/core/tests/Drupal/Tests/Core/Entity/ContentEntityDatabaseStorageTest.php
index 6e6048074138..cc77d6d6bd04 100644
--- a/core/tests/Drupal/Tests/Core/Entity/ContentEntityDatabaseStorageTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/ContentEntityDatabaseStorageTest.php
@@ -22,6 +22,34 @@
  */
 class ContentEntityDatabaseStorageTest extends UnitTestCase {
 
+  /**
+   * The content entity database storage used in this test.
+   *
+   * @var \Drupal\Core\Entity\ContentEntityDatabaseStorage|\PHPUnit_Framework_MockObject_MockObject
+   */
+  protected $entityStorage;
+
+  /**
+   * The mocked entity type used in this test.
+   *
+   * @var \Drupal\Core\Entity\ContentEntityTypeInterface|\PHPUnit_Framework_MockObject_MockObject
+   */
+  protected $entityType;
+
+  /**
+   * An array of field definitions used for this test, keyed by field name.
+   *
+   * @var \Drupal\Core\Field\FieldDefinition[]|\PHPUnit_Framework_MockObject_MockObject[]
+   */
+  protected $fieldDefinitions = array();
+
+  /**
+   * The mocked entity manager used in this test.
+   *
+   * @var \Drupal\Core\Entity\EntityManagerInterface|\PHPUnit_Framework_MockObject_MockObject
+   */
+  protected $entityManager;
+
   /**
    * {@inheritdoc}
    */
@@ -33,6 +61,856 @@ public static function getInfo() {
     );
   }
 
+  /**
+   * {@inheritdoc}
+   */
+  public function setUp() {
+    $this->entityType = $this->getMock('Drupal\Core\Entity\ContentEntityTypeInterface');
+    $this->entityType->expects($this->any())
+      ->method('id')
+      ->will($this->returnValue('entity_test'));
+
+    $this->entityManager = $this->getMock('Drupal\Core\Entity\EntityManagerInterface');
+  }
+
+  /**
+   * Tests ContentEntityDatabaseStorage::getBaseTable().
+   *
+   * @param string $base_table
+   *   The base table to be returned by the mocked entity type.
+   * @param string $expected
+   *   The expected return value of
+   *   ContentEntityDatabaseStorage::getBaseTable().
+   *
+   * @covers ::__construct()
+   * @covers ::getBaseTable()
+   *
+   * @dataProvider providerTestGetBaseTable
+   */
+  public function testGetBaseTable($base_table, $expected) {
+    $this->entityType->expects($this->once())
+      ->method('getBaseTable')
+      ->will($this->returnValue('entity_test'));
+
+    $this->setUpEntityStorage();
+
+    $this->assertSame($expected, $this->entityStorage->getBaseTable());
+  }
+
+  /**
+   * Provides test data for testGetBaseTable().
+   *
+   * @return array[]
+   *   An nested array where each inner array has the base table to be returned
+   *   by the mocked entity type as the first value and the expected return
+   *   value of ContentEntityDatabaseStorage::getBaseTable() as the second
+   *   value.
+   */
+  public function providerTestGetBaseTable() {
+    return array(
+      // Test that the entity type's base table is used, if provided.
+      array('entity_test', 'entity_test'),
+      // Test that the storage falls back to the entity type ID.
+      array(NULL, 'entity_test'),
+    );
+  }
+
+  /**
+   * Tests ContentEntityDatabaseStorage::getRevisionTable().
+   *
+   * @param string $revision_table
+   *   The revision table to be returned by the mocked entity type.
+   * @param string $expected
+   *   The expected return value of
+   *   ContentEntityDatabaseStorage::getRevisionTable().
+   *
+   * @cover ::__construct()
+   * @covers ::getRevisionTable()
+   *
+   * @dataProvider providerTestGetRevisionTable
+   */
+  public function testGetRevisionTable($revision_table, $expected) {
+    $this->entityType->expects($this->once())
+      ->method('isRevisionable')
+      ->will($this->returnValue(TRUE));
+    $this->entityType->expects($this->once())
+      ->method('getRevisionTable')
+      ->will($this->returnValue($revision_table));
+
+    $this->setUpEntityStorage();
+
+    $this->assertSame($expected, $this->entityStorage->getRevisionTable());
+  }
+
+  /**
+   * Provides test data for testGetRevisionTable().
+   *
+   * @return array[]
+   *   An nested array where each inner array has the revision table to be
+   *   returned by the mocked entity type as the first value and the expected
+   *   return value of ContentEntityDatabaseStorage::getRevisionTable() as the
+   *   second value.
+   */
+  public function providerTestGetRevisionTable() {
+    return array(
+      // Test that the entity type's revision table is used, if provided.
+      array('entity_test_revision', 'entity_test_revision'),
+      // Test that the storage falls back to the entity type ID with a
+      // '_revision' suffix.
+      array(NULL, 'entity_test_revision'),
+    );
+  }
+
+  /**
+   * Tests ContentEntityDatabaseStorage::getDataTable().
+   *
+   * @cover ::__construct()
+   * @covers ::getDataTable()
+   */
+  public function testGetDataTable() {
+    $this->entityType->expects($this->once())
+      ->method('isTranslatable')
+      ->will($this->returnValue(TRUE));
+    $this->entityType->expects($this->exactly(2))
+      ->method('getDataTable')
+      ->will($this->returnValue('entity_test_field_data'));
+
+    $this->setUpEntityStorage();
+
+    $this->assertSame('entity_test_field_data', $this->entityStorage->getDataTable());
+  }
+
+  /**
+   * Tests ContentEntityDatabaseStorage::getRevisionDataTable().
+   *
+   * @param string $revision_data_table
+   *   The revision data table to be returned by the mocked entity type.
+   * @param string $expected
+   *   The expected return value of
+   *   ContentEntityDatabaseStorage::getRevisionDataTable().
+   *
+   * @cover ::__construct()
+   * @covers ::getRevisionDataTable()
+   *
+   * @dataProvider providerTestGetRevisionDataTable
+   */
+  public function testGetRevisionDataTable($revision_data_table, $expected) {
+    $this->entityType->expects($this->once())
+      ->method('isRevisionable')
+      ->will($this->returnValue(TRUE));
+    $this->entityType->expects($this->once())
+      ->method('isTranslatable')
+      ->will($this->returnValue(TRUE));
+    $this->entityType->expects($this->exactly(2))
+      ->method('getDataTable')
+      ->will($this->returnValue('entity_test_field_data'));
+    $this->entityType->expects($this->once())
+      ->method('getRevisionDataTable')
+      ->will($this->returnValue($revision_data_table));
+
+    $this->setUpEntityStorage();
+
+    $actual = $this->entityStorage->getRevisionDataTable();
+    $this->assertSame($expected, $actual);
+  }
+
+  /**
+   * Provides test data for testGetRevisionDataTable().
+   *
+   * @return array[]
+   *   An nested array where each inner array has the revision data table to be
+   *   returned by the mocked entity type as the first value and the expected
+   *   return value of ContentEntityDatabaseStorage::getRevisionDataTable() as
+   *   the second value.
+   */
+  public function providerTestGetRevisionDataTable() {
+    return array(
+      // Test that the entity type's revision data table is used, if provided.
+      array('entity_test_field_revision', 'entity_test_field_revision'),
+      // Test that the storage falls back to the entity type ID with a
+      // '_field_revision' suffix.
+      array(NULL, 'entity_test_field_revision'),
+    );
+  }
+
+  /**
+   * Tests ContentEntityDatabaseStorage::getSchema().
+   *
+   * @covers ::__construct()
+   * @covers ::getSchema()
+   * @covers ::schemaHandler()
+   * @covers ::getTableMapping()
+   */
+  public function testGetSchema() {
+    $columns = array(
+      'value' => array(
+        'type' => 'int',
+      ),
+    );
+
+    $this->fieldDefinitions['id'] = $this->getMock('Drupal\Core\Field\FieldDefinitionInterface');
+    $this->fieldDefinitions['id']->expects($this->once())
+      ->method('getColumns')
+      ->will($this->returnValue($columns));
+    $this->fieldDefinitions['id']->expects($this->once())
+      ->method('getSchema')
+      ->will($this->returnValue(array('columns' => $columns)));
+
+    $this->entityType->expects($this->once())
+      ->method('getKeys')
+      ->will($this->returnValue(array('id' => 'id')));
+    $this->entityType->expects($this->any())
+      ->method('getKey')
+      ->will($this->returnValueMap(array(
+        // EntityStorageBase::__construct()
+        array('id', 'id'),
+        // ContentEntityStorageBase::__construct()
+        array('uuid', NULL),
+        array('bundle', NULL),
+        // ContentEntitySchemaHandler::initializeBaseTable()
+        array('id' => 'id'),
+        // ContentEntitySchemaHandler::processBaseTable()
+        array('id' => 'id'),
+      )));
+
+    $this->entityManager->expects($this->once())
+      ->method('getFieldStorageDefinitions')
+      ->with($this->entityType->id())
+      ->will($this->returnValue($this->fieldDefinitions));
+
+    $this->setUpEntityStorage();
+
+    $expected = array(
+      'entity_test' => array(
+        'description' => 'The base table for entity_test entities.',
+        'fields' => array(
+          'id' => array(
+            'type' => 'serial',
+            'description' => NULL,
+            'not null' => TRUE,
+          ),
+        ),
+        'primary key' => array('id'),
+        'indexes' => array(),
+        'foreign keys' => array(),
+      ),
+    );
+    $this->assertEquals($expected, $this->entityStorage->getSchema());
+
+    // Test that repeated calls do not result in repeatedly instantiating
+    // ContentEntitySchemaHandler as getFieldStorageDefinitions() is only
+    // expected to be called once.
+    $this->assertEquals($expected, $this->entityStorage->getSchema());
+  }
+
+  /**
+   * Tests getTableMapping() with an empty entity type.
+   *
+   * @covers ::__construct()
+   * @covers ::getTableMapping()
+   */
+  public function testGetTableMappingEmpty() {
+    $this->setUpEntityStorage();
+
+    $mapping = $this->entityStorage->getTableMapping();
+    $this->assertSame(array('entity_test'), $mapping->getTableNames());
+    $this->assertSame(array(), $mapping->getFieldNames('entity_test'));
+    $this->assertSame(array(), $mapping->getExtraColumns('entity_test'));
+  }
+
+  /**
+   * Tests getTableMapping() with a simple entity type.
+   *
+   * @param string[] $entity_keys
+   *   A map of entity keys to use for the mocked entity type.
+   *
+   * @covers ::__construct()
+   * @covers ::getTableMapping()
+   *
+   * @dataProvider providerTestGetTableMappingSimple()
+   */
+  public function testGetTableMappingSimple(array $entity_keys) {
+    $this->entityType->expects($this->any())
+      ->method('getKey')
+      ->will($this->returnValueMap(array(
+        array('id', $entity_keys['id']),
+        array('uuid', $entity_keys['uuid']),
+        array('bundle', $entity_keys['bundle']),
+      )));
+
+    $this->setUpEntityStorage();
+
+    $mapping = $this->entityStorage->getTableMapping();
+
+    $this->assertEquals(array('entity_test'), $mapping->getTableNames());
+
+    $expected = array_values(array_filter($entity_keys));
+    $this->assertEquals($expected, $mapping->getFieldNames('entity_test'));
+
+    $this->assertEquals(array(), $mapping->getExtraColumns('entity_test'));
+  }
+
+  /**
+   * Tests getTableMapping() with a simple entity type with some base fields.
+   *
+   * @param string[] $entity_keys
+   *   A map of entity keys to use for the mocked entity type.
+   *
+   * @covers ::__construct()
+   * @covers ::getTableMapping()
+   *
+   * @dataProvider providerTestGetTableMappingSimple()
+   */
+  public function testGetTableMappingSimpleWithFields(array $entity_keys) {
+    $base_field_names = array('title', 'description', 'owner');
+    $field_names = array_merge(array_values(array_filter($entity_keys)), $base_field_names);
+
+    $definition = $this->getMock('Drupal\Core\Field\FieldDefinitionInterface');
+    $this->fieldDefinitions = array_fill_keys($field_names, $definition);
+
+    $this->entityType->expects($this->any())
+      ->method('getKey')
+      ->will($this->returnValueMap(array(
+        array('id', $entity_keys['id']),
+        array('uuid', $entity_keys['uuid']),
+        array('bundle', $entity_keys['bundle']),
+      )));
+
+    $this->setUpEntityStorage();
+
+    $mapping = $this->entityStorage->getTableMapping();
+    $this->assertEquals(array('entity_test'), $mapping->getTableNames());
+    $this->assertEquals($field_names, $mapping->getFieldNames('entity_test'));
+    $this->assertEquals(array(), $mapping->getExtraColumns('entity_test'));
+  }
+
+  /**
+   * Provides test data for testGetTableMappingSimple().
+   *
+   * @return array[]
+   *   A nested array, where each inner array has a single value being a  map of
+   *   entity keys to use for the mocked entity type.
+   */
+  public function providerTestGetTableMappingSimple() {
+    return array(
+      array(array(
+        'id' => 'test_id',
+        'bundle' => NULL,
+        'uuid' => NULL,
+      )),
+      array(array(
+        'id' => 'test_id',
+        'bundle' => 'test_bundle',
+        'uuid' => NULL,
+      )),
+      array(array(
+        'id' => 'test_id',
+        'bundle' => NULL,
+        'uuid' => 'test_uuid',
+      )),
+      array(array(
+        'id' => 'test_id',
+        'bundle' => 'test_bundle',
+        'uuid' => 'test_uuid',
+      )),
+    );
+  }
+
+  /**
+   * Tests getTableMapping() with a revisionable, non-translatable entity type.
+   *
+   * @param string[] $entity_keys
+   *   A map of entity keys to use for the mocked entity type.
+   *
+   * @covers ::__construct()
+   * @covers ::getTableMapping()
+   *
+   * @dataProvider providerTestGetTableMappingSimple()
+   */
+  public function testGetTableMappingRevisionable(array $entity_keys) {
+    // This allows to re-use the data provider.
+    $entity_keys = array(
+      'id' => $entity_keys['id'],
+      'revision' => 'test_revision',
+      'bundle' => $entity_keys['bundle'],
+      'uuid' => $entity_keys['uuid'],
+    );
+
+    $this->entityType->expects($this->exactly(2))
+      ->method('isRevisionable')
+      ->will($this->returnValue(TRUE));
+    $this->entityType->expects($this->any())
+      ->method('getKey')
+      ->will($this->returnValueMap(array(
+        array('id', $entity_keys['id']),
+        array('uuid', $entity_keys['uuid']),
+        array('bundle', $entity_keys['bundle']),
+        array('revision', $entity_keys['revision']),
+      )));
+
+    $this->setUpEntityStorage();
+
+    $mapping = $this->entityStorage->getTableMapping();
+
+    $expected = array('entity_test', 'entity_test_revision');
+    $this->assertEquals($expected, $mapping->getTableNames());
+
+    $expected = array_values(array_filter($entity_keys));
+    $this->assertEquals($expected, $mapping->getFieldNames('entity_test'));
+    $expected = array($entity_keys['id'], $entity_keys['revision']);
+    $this->assertEquals($expected, $mapping->getFieldNames('entity_test_revision'));
+
+    $this->assertEquals(array(), $mapping->getExtraColumns('entity_test'));
+    $this->assertEquals(array(), $mapping->getExtraColumns('entity_test_revision'));
+  }
+
+  /**
+   * Tests getTableMapping() with a revisionable entity type with fields.
+   *
+   * @param string[] $entity_keys
+   *   A map of entity keys to use for the mocked entity type.
+   *
+   * @covers ::__construct()
+   * @covers ::getTableMapping()
+   *
+   * @dataProvider providerTestGetTableMappingSimple()
+   */
+  public function testGetTableMappingRevisionableWithFields(array $entity_keys) {
+    // This allows to re-use the data provider.
+    $entity_keys = array(
+      'id' => $entity_keys['id'],
+      'revision' => 'test_revision',
+      'bundle' => $entity_keys['bundle'],
+      'uuid' => $entity_keys['uuid'],
+    );
+
+    // PHPUnit does not allow for multiple data providers.
+    $test_cases = array(
+      array(),
+      array('revision_timestamp'),
+      array('revision_uid'),
+      array('log'),
+      array('revision_timestamp', 'revision_uid'),
+      array('revision_timestamp', 'log'),
+      array('revision_uid', 'log'),
+      array('revision_timestamp', 'revision_uid', 'log'),
+    );
+    foreach ($test_cases as $revision_metadata_field_names) {
+      $this->setUp();
+
+      $base_field_names = array('title');
+      $field_names = array_merge(array_values(array_filter($entity_keys)), $base_field_names);
+
+      $definition = $this->getMock('Drupal\Core\Field\FieldDefinitionInterface');
+      $this->fieldDefinitions = array_fill_keys($field_names, $definition);
+
+      $revisionable_field_names = array('description', 'owner');
+      $definition = $this->getMock('Drupal\Core\Field\FieldDefinitionInterface');
+      // isRevisionable() is only called once, but we re-use the same definition
+      // for all revisionable fields.
+      $definition->expects($this->any())
+        ->method('isRevisionable')
+        ->will($this->returnValue(TRUE));
+      $field_names = array_merge(
+        $field_names,
+        $revisionable_field_names
+      );
+      $this->fieldDefinitions += array_fill_keys(
+        array_merge($revisionable_field_names, $revision_metadata_field_names),
+        $definition
+      );
+
+      $this->entityType->expects($this->exactly(2))
+        ->method('isRevisionable')
+        ->will($this->returnValue(TRUE));
+      $this->entityType->expects($this->any())
+        ->method('getKey')
+        ->will($this->returnValueMap(array(
+          array('id', $entity_keys['id']),
+          array('uuid', $entity_keys['uuid']),
+          array('bundle', $entity_keys['bundle']),
+          array('revision', $entity_keys['revision']),
+        )));
+
+      $this->setUpEntityStorage();
+
+      $mapping = $this->entityStorage->getTableMapping();
+
+      $expected = array('entity_test', 'entity_test_revision');
+      $this->assertEquals($expected, $mapping->getTableNames());
+
+      $this->assertEquals($field_names, $mapping->getFieldNames('entity_test'));
+      $expected = array_merge(
+        array($entity_keys['id'], $entity_keys['revision']),
+        $revisionable_field_names,
+        $revision_metadata_field_names
+      );
+      $this->assertEquals($expected, $mapping->getFieldNames('entity_test_revision'));
+
+      $this->assertEquals(array(), $mapping->getExtraColumns('entity_test'));
+      $this->assertEquals(array(), $mapping->getExtraColumns('entity_test_revision'));
+    }
+  }
+
+  /**
+   * Tests getTableMapping() with a non-revisionable, translatable entity type.
+   *
+   * @param string[] $entity_keys
+   *   A map of entity keys to use for the mocked entity type.
+   *
+   * @covers ::__construct()
+   * @covers ::getTableMapping()
+   *
+   * @dataProvider providerTestGetTableMappingSimple()
+   */
+  public function testGetTableMappingTranslatable(array $entity_keys) {
+    // This allows to re-use the data provider.
+    $entity_keys['langcode'] = 'langcode';
+
+    $this->entityType->expects($this->exactly(2))
+      ->method('isTranslatable')
+      ->will($this->returnValue(TRUE));
+    $this->entityType->expects($this->exactly(3))
+      ->method('getDataTable')
+      ->will($this->returnValue('entity_test_field_data'));
+    $this->entityType->expects($this->any())
+      ->method('getKey')
+      ->will($this->returnValueMap(array(
+        array('id', $entity_keys['id']),
+        array('uuid', $entity_keys['uuid']),
+        array('bundle', $entity_keys['bundle']),
+      )));
+
+    $this->setUpEntityStorage();
+
+    $mapping = $this->entityStorage->getTableMapping();
+
+    $expected = array('entity_test', 'entity_test_field_data');
+    $this->assertEquals($expected, $mapping->getTableNames());
+
+    $expected = array_values(array_filter($entity_keys));
+    $actual = $mapping->getFieldNames('entity_test');
+    $this->assertEquals($expected, $actual);
+    // The UUID is not stored on the data table.
+    $expected = array_values(array_filter(array(
+      $entity_keys['id'],
+      $entity_keys['bundle'],
+      $entity_keys['langcode'],
+    )));
+    $actual = $mapping->getFieldNames('entity_test_field_data');
+    $this->assertEquals($expected, $actual);
+
+    $expected = array();
+    $actual = $mapping->getExtraColumns('entity_test');
+    $this->assertEquals($expected, $actual);
+    $expected = array('default_langcode');
+    $actual = $mapping->getExtraColumns('entity_test_field_data');
+    $this->assertEquals($expected, $actual);
+  }
+
+  /**
+   * Tests getTableMapping() with a translatable entity type with fields.
+   *
+   * @param string[] $entity_keys
+   *   A map of entity keys to use for the mocked entity type.
+   *
+   * @covers ::__construct()
+   * @covers ::getTableMapping()
+   *
+   * @dataProvider providerTestGetTableMappingSimple()
+   */
+  public function testGetTableMappingTranslatableWithFields(array $entity_keys) {
+    // This allows to re-use the data provider.
+    $entity_keys['langcode'] = 'langcode';
+
+    $base_field_names = array('title', 'description', 'owner');
+    $field_names = array_merge(array_values(array_filter($entity_keys)), $base_field_names);
+
+    $definition = $this->getMock('Drupal\Core\Field\FieldDefinitionInterface');
+    $this->fieldDefinitions = array_fill_keys($field_names, $definition);
+
+    $this->entityType->expects($this->exactly(2))
+      ->method('isTranslatable')
+      ->will($this->returnValue(TRUE));
+    $this->entityType->expects($this->exactly(3))
+      ->method('getDataTable')
+      ->will($this->returnValue('entity_test_field_data'));
+    $this->entityType->expects($this->any())
+      ->method('getKey')
+      ->will($this->returnValueMap(array(
+        array('id', $entity_keys['id']),
+        array('uuid', $entity_keys['uuid']),
+        array('bundle', $entity_keys['bundle']),
+      )));
+
+    $this->setUpEntityStorage();
+
+    $mapping = $this->entityStorage->getTableMapping();
+
+    $expected = array('entity_test', 'entity_test_field_data');
+    $this->assertEquals($expected, $mapping->getTableNames());
+
+    $expected = array_values(array_filter($entity_keys));
+    $actual = $mapping->getFieldNames('entity_test');
+    $this->assertEquals($expected, $actual);
+    // The UUID is not stored on the data table.
+    $expected = array_merge(array_filter(array(
+      $entity_keys['id'],
+      $entity_keys['bundle'],
+      $entity_keys['langcode'],
+    )), $base_field_names);
+    $actual = $mapping->getFieldNames('entity_test_field_data');
+    $this->assertEquals($expected, $actual);
+
+    $expected = array();
+    $actual = $mapping->getExtraColumns('entity_test');
+    $this->assertEquals($expected, $actual);
+    $expected = array('default_langcode');
+    $actual = $mapping->getExtraColumns('entity_test_field_data');
+    $this->assertEquals($expected, $actual);
+  }
+
+  /**
+   * Tests getTableMapping() with a revisionable, translatable entity type.
+   *
+   * @param string[] $entity_keys
+   *   A map of entity keys to use for the mocked entity type.
+   *
+   * @covers ::__construct()
+   * @covers ::getTableMapping()
+   *
+   * @dataProvider providerTestGetTableMappingSimple()
+   */
+  public function testGetTableMappingRevisionableTranslatable(array $entity_keys) {
+    // This allows to re-use the data provider.
+    $entity_keys = array(
+      'id' => $entity_keys['id'],
+      'revision' => 'test_revision',
+      'bundle' => $entity_keys['bundle'],
+      'uuid' => $entity_keys['uuid'],
+      'langcode' => 'langcode',
+    );
+
+    $this->entityType->expects($this->exactly(2))
+      ->method('isRevisionable')
+      ->will($this->returnValue(TRUE));
+    $this->entityType->expects($this->exactly(2))
+      ->method('isTranslatable')
+      ->will($this->returnValue(TRUE));
+    $this->entityType->expects($this->exactly(3))
+      ->method('getDataTable')
+      ->will($this->returnValue('entity_test_field_data'));
+    $this->entityType->expects($this->any())
+      ->method('getKey')
+      ->will($this->returnValueMap(array(
+        array('id', $entity_keys['id']),
+        array('uuid', $entity_keys['uuid']),
+        array('bundle', $entity_keys['bundle']),
+        array('revision', $entity_keys['revision']),
+      )));
+
+    $this->setUpEntityStorage();
+
+    $mapping = $this->entityStorage->getTableMapping();
+
+    $expected = array(
+      'entity_test',
+      'entity_test_field_data',
+      'entity_test_revision',
+      'entity_test_field_revision',
+    );
+    $this->assertEquals($expected, $mapping->getTableNames());
+
+    // The language code is not stored on the base table, but on the revision
+    // table.
+    $expected = array_values(array_filter(array(
+      $entity_keys['id'],
+      $entity_keys['revision'],
+      $entity_keys['bundle'],
+      $entity_keys['uuid'],
+    )));
+    $actual = $mapping->getFieldNames('entity_test');
+    $this->assertEquals($expected, $actual);
+    // The revision table on the other hand does not store the bundle and the
+    // UUID.
+    $expected = array_values(array_filter(array(
+      $entity_keys['id'],
+      $entity_keys['revision'],
+      $entity_keys['langcode'],
+    )));
+    $actual = $mapping->getFieldNames('entity_test_revision');
+    $this->assertEquals($expected, $actual);
+    // The UUID is not stored on the data table.
+    $expected = array_values(array_filter(array(
+      $entity_keys['id'],
+      $entity_keys['revision'],
+      $entity_keys['bundle'],
+      $entity_keys['langcode'],
+    )));
+    $actual = $mapping->getFieldNames('entity_test_field_data');
+    $this->assertEquals($expected, $actual);
+    // The data revision also does not store the bundle.
+    $expected = array_values(array_filter(array(
+      $entity_keys['id'],
+      $entity_keys['revision'],
+      $entity_keys['langcode'],
+    )));
+    $actual = $mapping->getFieldNames('entity_test_field_revision');
+    $this->assertEquals($expected, $actual);
+
+    $expected = array();
+    $actual = $mapping->getExtraColumns('entity_test');
+    $this->assertEquals($expected, $actual);
+    $actual = $mapping->getExtraColumns('entity_test_revision');
+    $this->assertEquals($expected, $actual);
+    $expected = array('default_langcode');
+    $actual = $mapping->getExtraColumns('entity_test_field_data');
+    $this->assertEquals($expected, $actual);
+    $actual = $mapping->getExtraColumns('entity_test_field_revision');
+    $this->assertEquals($expected, $actual);
+  }
+
+  /**
+   * Tests getTableMapping() with a complex entity type with fields.
+   *
+   * @param string[] $entity_keys
+   *   A map of entity keys to use for the mocked entity type.
+   *
+   * @covers ::__construct()
+   * @covers ::getTableMapping()
+   *
+   * @dataProvider providerTestGetTableMappingSimple()
+   */
+  public function testGetTableMappingRevisionableTranslatableWithFields(array $entity_keys) {
+    // This allows to re-use the data provider.
+    $entity_keys = array(
+      'id' => $entity_keys['id'],
+      'revision' => 'test_revision',
+      'bundle' => $entity_keys['bundle'],
+      'uuid' => $entity_keys['uuid'],
+      'langcode' => 'langcode',
+    );
+
+    // PHPUnit does not allow for multiple data providers.
+    $test_cases = array(
+      array(),
+      array('revision_timestamp'),
+      array('revision_uid'),
+      array('log'),
+      array('revision_timestamp', 'revision_uid'),
+      array('revision_timestamp', 'log'),
+      array('revision_uid', 'log'),
+      array('revision_timestamp', 'revision_uid', 'log'),
+    );
+    foreach ($test_cases as $revision_metadata_field_names) {
+      $this->setUp();
+
+      $base_field_names = array('title');
+      $field_names = array_merge(array_values(array_filter($entity_keys)), $base_field_names);
+
+      $definition = $this->getMock('Drupal\Core\Field\FieldDefinitionInterface');
+      $this->fieldDefinitions = array_fill_keys($field_names, $definition);
+
+      $revisionable_field_names = array('description', 'owner');
+      $definition = $this->getMock('Drupal\Core\Field\FieldDefinitionInterface');
+      // isRevisionable() is only called once, but we re-use the same definition
+      // for all revisionable fields.
+      $definition->expects($this->any())
+        ->method('isRevisionable')
+        ->will($this->returnValue(TRUE));
+      $this->fieldDefinitions += array_fill_keys(
+        array_merge($revisionable_field_names, $revision_metadata_field_names),
+        $definition
+      );
+
+      $this->entityType->expects($this->exactly(2))
+        ->method('isRevisionable')
+        ->will($this->returnValue(TRUE));
+      $this->entityType->expects($this->exactly(2))
+        ->method('isTranslatable')
+        ->will($this->returnValue(TRUE));
+      $this->entityType->expects($this->exactly(3))
+        ->method('getDataTable')
+        ->will($this->returnValue('entity_test_field_data'));
+      $this->entityType->expects($this->any())
+        ->method('getKey')
+        ->will($this->returnValueMap(array(
+          array('id', $entity_keys['id']),
+          array('uuid', $entity_keys['uuid']),
+          array('bundle', $entity_keys['bundle']),
+          array('revision', $entity_keys['revision']),
+        )));
+
+      $this->setUpEntityStorage();
+
+      $mapping = $this->entityStorage->getTableMapping();
+
+      $expected = array(
+        'entity_test',
+        'entity_test_field_data',
+        'entity_test_revision',
+        'entity_test_field_revision',
+      );
+      $this->assertEquals($expected, $mapping->getTableNames());
+
+      $expected = array(
+        'entity_test',
+        'entity_test_field_data',
+        'entity_test_revision',
+        'entity_test_field_revision',
+      );
+      $this->assertEquals($expected, $mapping->getTableNames());
+
+      // The language code is not stored on the base table, but on the revision
+      // table.
+      $expected = array_values(array_filter(array(
+        $entity_keys['id'],
+        $entity_keys['revision'],
+        $entity_keys['bundle'],
+        $entity_keys['uuid'],
+      )));
+      $actual = $mapping->getFieldNames('entity_test');
+      $this->assertEquals($expected, $actual);
+      // The revision table on the other hand does not store the bundle and the
+      // UUID.
+      $expected = array_merge(array_filter(array(
+        $entity_keys['id'],
+        $entity_keys['revision'],
+        $entity_keys['langcode'],
+      )), $revision_metadata_field_names);
+      $actual = $mapping->getFieldNames('entity_test_revision');
+      $this->assertEquals($expected, $actual);
+      // The UUID is not stored on the data table.
+      $expected = array_merge(array_filter(array(
+        $entity_keys['id'],
+        $entity_keys['revision'],
+        $entity_keys['bundle'],
+        $entity_keys['langcode'],
+      )), $base_field_names, $revisionable_field_names);
+      $actual = $mapping->getFieldNames('entity_test_field_data');
+      $this->assertEquals($expected, $actual);
+      // The data revision also does not store the bundle.
+      $expected = array_merge(array_filter(array(
+        $entity_keys['id'],
+        $entity_keys['revision'],
+        $entity_keys['langcode'],
+      )), $revisionable_field_names);
+      $actual = $mapping->getFieldNames('entity_test_field_revision');
+      $this->assertEquals($expected, $actual);
+
+      $expected = array();
+      $actual = $mapping->getExtraColumns('entity_test');
+      $this->assertEquals($expected, $actual);
+      $actual = $mapping->getExtraColumns('entity_test_revision');
+      $this->assertEquals($expected, $actual);
+      $expected = array('default_langcode');
+      $actual = $mapping->getExtraColumns('entity_test_field_data');
+      $this->assertEquals($expected, $actual);
+      $actual = $mapping->getExtraColumns('entity_test_field_revision');
+      $this->assertEquals($expected, $actual);
+    }
+  }
+
   /**
    * Tests field SQL schema generation for an entity with a string identifier.
    *
@@ -40,21 +918,19 @@ public static function getInfo() {
    */
   public function testFieldSqlSchemaForEntityWithStringIdentifier() {
     $field_type_manager = $this->getMock('Drupal\Core\Field\FieldTypePluginManagerInterface');
-    $entity_manager = $this->getMock('\Drupal\Core\Entity\EntityManagerInterface');
 
     $container = new ContainerBuilder();
     $container->set('plugin.manager.field.field_type', $field_type_manager);
-    $container->set('entity.manager', $entity_manager);
+    $container->set('entity.manager', $this->entityManager);
     \Drupal::setContainer($container);
 
-    $definition = $this->getMock('Drupal\Core\Entity\EntityTypeInterface');
-    $definition->expects($this->any())
+    $this->entityType->expects($this->any())
       ->method('getKey')
       ->will($this->returnValueMap(array(
         array('id', 'id'),
         array('revision', 'revision'),
       )));
-    $definition->expects($this->once())
+    $this->entityType->expects($this->once())
       ->method('hasKey')
       ->with('revision')
       ->will($this->returnValue(TRUE));
@@ -66,19 +942,18 @@ public function testFieldSqlSchemaForEntityWithStringIdentifier() {
       ->method('getDefaultInstanceSettings')
       ->will($this->returnValue(array()));
 
-    $fields['id'] = FieldDefinition::create('string')
+    $this->fieldDefinitions['id'] = FieldDefinition::create('string')
       ->setName('id');
-    $fields['revision'] = FieldDefinition::create('string')
+    $this->fieldDefinitions['revision'] = FieldDefinition::create('string')
       ->setName('revision');
 
-    $entity_manager->expects($this->any())
+    $this->entityManager->expects($this->any())
       ->method('getDefinition')
       ->with('test_entity')
-      ->will($this->returnValue($definition));
-    $entity_manager->expects($this->any())
+      ->will($this->returnValue($this->entityType));
+    $this->entityManager->expects($this->once())
       ->method('getBaseFieldDefinitions')
-      ->with('test_entity')
-      ->will($this->returnValue($fields));
+      ->will($this->returnValue($this->fieldDefinitions));
 
     // Define a field definition for a test_field field.
     $field = $this->getMock('\Drupal\field\FieldConfigInterface');
@@ -118,43 +993,42 @@ public function testFieldSqlSchemaForEntityWithStringIdentifier() {
   public function testCreate() {
     $language_manager = $this->getMock('Drupal\Core\Language\LanguageManagerInterface');
     $module_handler = $this->getMock('Drupal\Core\Extension\ModuleHandlerInterface');
-    $entity_manager = $this->getMock('Drupal\Core\Entity\EntityManagerInterface');
-    // @todo Add field definitions to test default values of fields.
-    $entity_manager->expects($this->atLeastOnce())
-      ->method('getFieldDefinitions')
-      ->will($this->returnValue(array()));
 
     $container = new ContainerBuilder();
     $container->set('language_manager', $language_manager);
-    $container->set('entity.manager', $entity_manager);
+    $container->set('entity.manager', $this->entityManager);
     $container->set('module_handler', $module_handler);
     \Drupal::setContainer($container);
 
-    $entity = $this->getMockForAbstractClass('Drupal\Core\Entity\ContentEntityBase', array(), '', FALSE, TRUE, TRUE, array('id'));
-    $entity_type = $this->getMock('Drupal\Core\Entity\EntityTypeInterface');
-    $entity_type->expects($this->atLeastOnce())
-      ->method('id')
-      ->will($this->returnValue('test_entity_type'));
-    $entity_type->expects($this->atLeastOnce())
+    $entity = $this->getMockBuilder('Drupal\Core\Entity\ContentEntityBase')
+      ->disableOriginalConstructor()
+      ->setMethods(array('id'))
+      ->getMockForAbstractClass();
+
+    $this->entityType->expects($this->atLeastOnce())
       ->method('getClass')
       ->will($this->returnValue(get_class($entity)));
-    $entity_type->expects($this->atLeastOnce())
+    $this->entityType->expects($this->atLeastOnce())
       ->method('getKeys')
       ->will($this->returnValue(array('id' => 'id')));
-    $entity_type->expects($this->atLeastOnce())
+
+    // ContentEntityStorageBase iterates over the entity which calls this method
+    // internally in ContentEntityBase::getProperties().
+    $this->entityManager->expects($this->once())
+      ->method('getFieldDefinitions')
+      ->will($this->returnValue(array()));
+
+    $this->entityType->expects($this->atLeastOnce())
       ->method('isRevisionable')
       ->will($this->returnValue(FALSE));
-    $entity_manager->expects($this->atLeastOnce())
+    $this->entityManager->expects($this->atLeastOnce())
       ->method('getDefinition')
-      ->with('test_entity_type')
-      ->will($this->returnValue($entity_type));
+      ->with($this->entityType->id())
+      ->will($this->returnValue($this->entityType));
 
-    $connection = $this->getMockBuilder('Drupal\Core\Database\Connection')
-      ->disableOriginalConstructor()
-      ->getMock();
-    $entity_storage = new ContentEntityDatabaseStorage($entity_type, $connection, $entity_manager);
+    $this->setUpEntityStorage();
 
-    $entity = $entity_storage->create();
+    $entity = $this->entityStorage->create();
     $entity->expects($this->atLeastOnce())
       ->method('id')
       ->will($this->returnValue('foo'));
@@ -164,4 +1038,19 @@ public function testCreate() {
     $this->assertTrue($entity->isNew());
   }
 
+  /**
+   * Sets up the content entity database storage.
+   */
+  protected function setUpEntityStorage() {
+    $connection = $this->getMockBuilder('Drupal\Core\Database\Connection')
+      ->disableOriginalConstructor()
+      ->getMock();
+
+    $this->entityManager->expects($this->once())
+      ->method('getBaseFieldDefinitions')
+      ->will($this->returnValue($this->fieldDefinitions));
+
+    $this->entityStorage = new ContentEntityDatabaseStorage($this->entityType, $connection, $this->entityManager);
+  }
+
 }
diff --git a/core/tests/Drupal/Tests/Core/Entity/Schema/ContentEntitySchemaHandlerTest.php b/core/tests/Drupal/Tests/Core/Entity/Schema/ContentEntitySchemaHandlerTest.php
new file mode 100644
index 000000000000..b39fbcbc29aa
--- /dev/null
+++ b/core/tests/Drupal/Tests/Core/Entity/Schema/ContentEntitySchemaHandlerTest.php
@@ -0,0 +1,770 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Tests\Core\Entity\Schema\ContentEntitySchemaHandlerTest.
+ */
+
+namespace Drupal\Tests\Core\Entity\Schema;
+
+use Drupal\Core\Entity\ContentEntityType;
+use Drupal\Core\Entity\Schema\ContentEntitySchemaHandler;
+use Drupal\Core\Entity\Sql\DefaultTableMapping;
+use Drupal\Tests\UnitTestCase;
+
+/**
+ * Tests the content entity schema handler.
+ *
+ * @coversDefaultClass \Drupal\Core\Entity\Schema\ContentEntitySchemaHandler
+ *
+ * @group Drupal
+ * @group Entity
+ */
+class ContentEntitySchemaHandlerTest extends UnitTestCase {
+
+  /**
+   * The mocked entity manager used in this test.
+   *
+   * @var \Drupal\Core\Entity\EntityManagerInterface|\PHPUnit_Framework_MockObject_MockObject
+   */
+  protected $entityManager;
+
+  /**
+   * The mocked entity type used in this test.
+   *
+   * @var \Drupal\Core\Entity\ContentEntityTypeInterface
+   */
+  protected $entityType;
+
+  /**
+   * The mocked SQL storage used in this test.
+   *
+   * @var \Drupal\Core\Entity\ContentEntityDatabaseStorage|\PHPUnit_Framework_MockObject_MockObject
+   */
+  protected $storage;
+
+  /**
+   * The mocked field definitions used in this test.
+   *
+   * @var \Drupal\Core\Field\FieldStorageDefinitionInterface[]|\PHPUnit_Framework_MockObject_MockObject[]
+   */
+  protected $storageDefinitions;
+
+  /**
+   * The content entity schema handler used in this test.
+   *
+   * @var \Drupal\Core\Entity\Schema\ContentEntitySchemaHandler.
+   */
+  protected $schemaHandler;
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function getInfo() {
+    return array(
+      'name' => 'Content entity schema handler',
+      'description' => 'Tests the schema generation for content entities.',
+      'group' => 'Entity',
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setUp() {
+    $this->entityManager = $this->getMock('Drupal\Core\Entity\EntityManagerInterface');
+    $this->storage = $this->getMockBuilder('Drupal\Core\Entity\ContentEntityDatabaseStorage')
+      ->disableOriginalConstructor()
+      ->getMock();
+
+    $this->storage->expects($this->any())
+      ->method('getBaseTable')
+      ->will($this->returnValue('entity_test'));
+
+    // Add an ID field. This also acts as a test for a simple, single-column
+    // field.
+    $this->setUpStorageDefinition('id', array(
+      'columns' => array(
+        'value' => array(
+          'type' => 'int',
+        ),
+      ),
+    ));
+  }
+
+  /**
+   * Tests the schema for non-revisionable, non-translatable entities.
+   *
+   * @param bool $uuid_key
+   *   Whether or not the tested entity type should have a UUID key.
+   *
+   * @covers ::__construct()
+   * @covers ::getSchema()
+   * @covers ::getTables()
+   * @covers ::initializeBaseTable()
+   * @covers ::getEntityIndexName()
+   * @covers ::addFieldSchema()
+   * @covers ::getFieldIndexes()
+   * @covers ::getFieldUniqueKeys()
+   * @covers ::getFieldForeignKeys()
+   * @covers ::getFieldSchemaData()
+   * @covers ::addDefaultLangcodeSchema()
+   * @covers ::processBaseTable()
+   * @covers ::processIdentifierSchema()
+   *
+   * @dataProvider providerTestGetSchemaLayoutBase
+   */
+  public function testGetSchemaBase($uuid_key) {
+    $this->entityType = new ContentEntityType(array(
+      'id' => 'entity_test',
+      'entity_keys' => array(
+        'id' => 'id',
+        'uuid' => $uuid_key ? 'uuid' : NULL,
+      ),
+    ));
+
+    // Add a field with a 'length' constraint.
+    $this->setUpStorageDefinition('name', array(
+      'columns' => array(
+        'value' => array(
+          'type' => 'varchar',
+          'length' => 255,
+        ),
+      ),
+    ));
+    if ($uuid_key) {
+      $this->setUpStorageDefinition('uuid', array(
+        'columns' => array(
+          'value' => array(
+            'type' => 'varchar',
+            'length' => 128,
+          ),
+        ),
+      ));
+    }
+    // Add a multi-column field.
+    $this->setUpStorageDefinition('description', array(
+      'columns' => array(
+        'value' => array(
+          'type' => 'text',
+          'description' => 'The text value',
+        ),
+        'format' => array(
+          'type' => 'varchar',
+          'description' => 'The text description',
+        ),
+      ),
+    ));
+    // Add a field with an index.
+    $this->setUpStorageDefinition('owner', array(
+      'columns' => array(
+        'target_id' => array(
+          'description' => 'The ID of the target entity.',
+          'type' => 'int',
+        ),
+      ),
+      'indexes' => array(
+        'target_id' => array('target_id'),
+      ),
+    ));
+    // Add a field with an index, specified as column name and length.
+    $this->setUpStorageDefinition('translator', array(
+      'columns' => array(
+        'target_id' => array(
+          'description' => 'The ID of the target entity.',
+          'type' => 'int',
+        ),
+      ),
+      'indexes' => array(
+        'target_id' => array(array('target_id', 10)),
+      ),
+    ));
+    // Add a field with a multi-column index.
+    $this->setUpStorageDefinition('location', array(
+      'columns' => array(
+        'country' => array(
+          'type' => 'varchar',
+        ),
+        'state' => array(
+          'type' => 'varchar',
+        ),
+        'city' => array(
+          'type' => 'varchar',
+        )
+      ),
+      'indexes' => array(
+        'country_state_city' => array('country', 'state', array('city', 10)),
+      ),
+    ));
+    // Add a field with a foreign key.
+    $this->setUpStorageDefinition('editor', array(
+      'columns' => array(
+        'target_id' => array(
+          'type' => 'int',
+        ),
+      ),
+      'foreign keys' => array(
+        'user_id' => array(
+          'table' => 'users',
+          'columns' => array('target_id' => 'uid'),
+        ),
+      ),
+    ));
+    // Add a multi-column field with a foreign key.
+    $this->setUpStorageDefinition('editor_revision', array(
+      'columns' => array(
+        'target_id' => array(
+          'type' => 'int',
+        ),
+        'target_revision_id' => array(
+          'type' => 'int',
+        ),
+      ),
+      'foreign keys' => array(
+        'user_id' => array(
+          'table' => 'users',
+          'columns' => array('target_id' => 'uid'),
+        ),
+      ),
+    ));
+
+    $this->setUpSchemaHandler();
+
+    $table_mapping = new DefaultTableMapping($this->storageDefinitions);
+    $table_mapping->setFieldNames('entity_test', array_keys($this->storageDefinitions));
+    $table_mapping->setExtraColumns('entity_test', array('default_langcode'));
+
+    $this->storage->expects($this->once())
+      ->method('getTableMapping')
+      ->will($this->returnValue($table_mapping));
+
+    $expected = array(
+      'entity_test' => array(
+        'description' => 'The base table for entity_test entities.',
+        'fields' => array(
+          'id' => array(
+            'description' => 'The id field.',
+            'type' => 'serial',
+            'not null' => TRUE,
+          ),
+          'name' => array(
+            'description' => 'The name field.',
+            'type' => 'varchar',
+            'length' => 255,
+          ),
+          'description__value' => array(
+            'description' => 'The description field.',
+            'type' => 'text',
+          ),
+          'description__format' => array(
+            'description' => 'The description field.',
+            'type' => 'varchar',
+          ),
+          'owner' => array(
+            'description' => 'The owner field.',
+            'type' => 'int',
+          ),
+          'translator' => array(
+            'description' => 'The translator field.',
+            'type' => 'int',
+          ),
+          'location__country' => array(
+            'description' => 'The location field.',
+            'type' => 'varchar',
+          ),
+          'location__state' => array(
+            'description' => 'The location field.',
+            'type' => 'varchar',
+          ),
+          'location__city' => array(
+            'description' => 'The location field.',
+            'type' => 'varchar',
+          ),
+          'editor' => array(
+            'description' => 'The editor field.',
+            'type' => 'int',
+          ),
+          'editor_revision__target_id' => array(
+            'description' => 'The editor_revision field.',
+            'type' => 'int',
+          ),
+          'editor_revision__target_revision_id' => array(
+            'description' => 'The editor_revision field.',
+            'type' => 'int',
+          ),
+          'default_langcode' => array(
+            'description' => 'Boolean indicating whether field values are in the default entity language.',
+            'type' => 'int',
+            'size' => 'tiny',
+            'not null' => TRUE,
+            'default' => 1,
+          ),
+        ),
+        'primary key' => array('id'),
+        'indexes' => array(
+          'entity_test_field__owner__target_id' => array('owner'),
+          'entity_test_field__translator__target_id' => array(
+            array('translator', 10),
+          ),
+          'entity_test_field__location__country_state_city' => array(
+            'location__country',
+            'location__state',
+            array('location__city', 10),
+          ),
+        ),
+        'foreign keys' => array(
+          'entity_test_field__editor__user_id' => array(
+            'table' => 'users',
+            'columns' => array('editor' => 'uid'),
+          ),
+          'entity_test_field__editor_revision__user_id' => array(
+            'table' => 'users',
+            'columns' => array('editor_revision__target_id' => 'uid'),
+          ),
+        ),
+      ),
+    );
+    if ($uuid_key) {
+      $expected['entity_test']['fields']['uuid'] = array(
+        'type' => 'varchar',
+        'length' => 128,
+        'description' => 'The uuid field.',
+        'not null' => TRUE,
+      );
+      $expected['entity_test']['unique keys']['entity_test__uuid'] = array('uuid');
+    }
+    $actual = $this->schemaHandler->getSchema();
+
+    $this->assertEquals($expected, $actual);
+  }
+
+  /**
+   * Provides data for testGetSchemaLayoutBase().
+   *
+   * @return array
+   *   Returns a nested array where each inner array returns a boolean,
+   *   indicating whether or not the tested entity type should include a UUID
+   *   key.
+   */
+  public function providerTestGetSchemaLayoutBase() {
+    return array(
+      array(FALSE),
+      array(TRUE),
+    );
+  }
+
+  /**
+   * Tests the schema for revisionable, non-translatable entities.
+   *
+   * @covers ::__construct()
+   * @covers ::getSchema()
+   * @covers ::getTables()
+   * @covers ::initializeBaseTable()
+   * @covers ::initializeRevisionTable()
+   * @covers ::getEntityIndexName()
+   * @covers ::processRevisionTable()
+   * @covers ::processIdentifierSchema()
+   */
+  public function testGetSchemaRevisionable() {
+    $this->entityType = new ContentEntityType(array(
+      'id' => 'entity_test',
+      'entity_keys' => array(
+        'id' => 'id',
+        'revision' => 'revision_id',
+      ),
+    ));
+
+    $this->storage->expects($this->exactly(2))
+      ->method('getRevisionTable')
+      ->will($this->returnValue('entity_test_revision'));
+
+    $this->setUpStorageDefinition('revision_id', array(
+      'columns' => array(
+        'value' => array(
+          'type' => 'int',
+        ),
+      ),
+    ));
+
+    $this->setUpSchemaHandler();
+
+    $table_mapping = new DefaultTableMapping($this->storageDefinitions);
+    $table_mapping->setFieldNames('entity_test', array_keys($this->storageDefinitions));
+    $table_mapping->setFieldNames('entity_test_revision', array_keys($this->storageDefinitions));
+
+    $this->storage->expects($this->once())
+      ->method('getTableMapping')
+      ->will($this->returnValue($table_mapping));
+
+    $expected = array(
+      'entity_test' => array(
+        'description' => 'The base table for entity_test entities.',
+        'fields' => array(
+          'id' => array(
+            'description' => 'The id field.',
+            'type' => 'serial',
+            'not null' => TRUE,
+          ),
+          'revision_id' => array(
+            'description' => 'The revision_id field.',
+            'type' => 'int',
+          )
+        ),
+        'primary key' => array('id'),
+        'indexes' => array(),
+        'foreign keys' => array(
+          'entity_test__revision' => array(
+            'table' => 'entity_test_revision',
+            'columns' => array('revision_id' => 'revision_id'),
+          )
+        ),
+        'unique keys' => array(
+          'entity_test__revision_id' => array('revision_id'),
+        ),
+      ),
+      'entity_test_revision' => array(
+        'description' => 'The revision table for entity_test entities.',
+        'fields' => array(
+          'id' => array(
+            'description' => 'The id field.',
+            'type' => 'int',
+            'not null' => TRUE,
+          ),
+          'revision_id' => array(
+            'description' => 'The revision_id field.',
+            'type' => 'serial',
+          ),
+        ),
+        'primary key' => array('revision_id'),
+        'indexes' => array(
+          'entity_test__id' => array('id'),
+        ),
+        'foreign keys' => array(
+          'entity_test__revisioned' => array(
+            'table' => 'entity_test',
+            'columns' => array('id' => 'id'),
+          ),
+        ),
+      ),
+    );
+
+    $actual = $this->schemaHandler->getSchema();
+
+    $this->assertEquals($expected, $actual);
+  }
+
+  /**
+   * Tests the schema for non-revisionable, translatable entities.
+   *
+   * @covers ::__construct()
+   * @covers ::getSchema()
+   * @covers ::getTables()
+   * @covers ::initializeDataTable()
+   * @covers ::getEntityIndexName()
+   * @covers ::processDataTable()
+   */
+  public function testGetSchemaTranslatable() {
+    $this->entityType = new ContentEntityType(array(
+      'id' => 'entity_test',
+      'entity_keys' => array(
+        'id' => 'id',
+      ),
+    ));
+
+    $this->storage->expects($this->once())
+      ->method('getDataTable')
+      ->will($this->returnValue('entity_test_field_data'));
+
+    $this->setUpStorageDefinition('langcode', array(
+      'columns' => array(
+        'value' => array(
+          'type' => 'varchar',
+        ),
+      ),
+    ));
+
+    $this->setUpSchemaHandler();
+
+    $table_mapping = new DefaultTableMapping($this->storageDefinitions);
+    $table_mapping->setFieldNames('entity_test', array_keys($this->storageDefinitions));
+    $table_mapping->setFieldNames('entity_test_field_data', array_keys($this->storageDefinitions));
+
+    $this->storage->expects($this->once())
+      ->method('getTableMapping')
+      ->will($this->returnValue($table_mapping));
+
+    $expected = array(
+      'entity_test' => array(
+        'description' => 'The base table for entity_test entities.',
+        'fields' => array(
+          'id' => array(
+            'description' => 'The id field.',
+            'type' => 'serial',
+            'not null' => TRUE,
+          ),
+          'langcode' => array(
+            'description' => 'The langcode field.',
+            'type' => 'varchar',
+            'not null' => TRUE,
+          )
+        ),
+        'primary key' => array('id'),
+        'indexes' => array(),
+        'foreign keys' => array(),
+      ),
+      'entity_test_field_data' => array(
+        'description' => 'The data table for entity_test entities.',
+        'fields' => array(
+          'id' => array(
+            'description' => 'The id field.',
+            'type' => 'int',
+            'not null' => TRUE,
+          ),
+          'langcode' => array(
+            'description' => 'The langcode field.',
+            'type' => 'varchar',
+            'not null' => TRUE,
+          ),
+        ),
+        'primary key' => array('id', 'langcode'),
+        'indexes' => array(),
+        'foreign keys' => array(
+          'entity_test' => array(
+            'table' => 'entity_test',
+            'columns' => array('id' => 'id'),
+          ),
+        ),
+      ),
+    );
+
+    $actual = $this->schemaHandler->getSchema();
+
+    $this->assertEquals($expected, $actual);
+  }
+
+  /**
+   * Tests the schema for revisionable, translatable entities.
+   *
+   * @covers ::__construct()
+   * @covers ::getSchema()
+   * @covers ::getTables()
+   * @covers ::initializeDataTable()
+   * @covers ::getEntityIndexName()
+   * @covers ::initializeRevisionDataTable()
+   * @covers ::processRevisionDataTable()
+   */
+  public function testGetSchemaRevisionableTranslatable() {
+    $this->entityType = new ContentEntityType(array(
+      'id' => 'entity_test',
+      'entity_keys' => array(
+        'id' => 'id',
+        'revision' => 'revision_id',
+      ),
+    ));
+
+    $this->storage->expects($this->exactly(3))
+      ->method('getRevisionTable')
+      ->will($this->returnValue('entity_test_revision'));
+    $this->storage->expects($this->once())
+      ->method('getDataTable')
+      ->will($this->returnValue('entity_test_field_data'));
+    $this->storage->expects($this->once())
+      ->method('getRevisionDataTable')
+      ->will($this->returnValue('entity_test_revision_field_data'));
+
+    $this->setUpStorageDefinition('revision_id', array(
+      'columns' => array(
+        'value' => array(
+          'type' => 'int',
+        ),
+      ),
+    ));
+    $this->setUpStorageDefinition('langcode', array(
+      'columns' => array(
+        'value' => array(
+          'type' => 'varchar',
+        ),
+      ),
+    ));
+
+    $this->setUpSchemaHandler();
+
+    $table_mapping = new DefaultTableMapping($this->storageDefinitions);
+    $table_mapping->setFieldNames('entity_test', array_keys($this->storageDefinitions));
+    $table_mapping->setFieldNames('entity_test_revision', array_keys($this->storageDefinitions));
+    $table_mapping->setFieldNames('entity_test_field_data', array_keys($this->storageDefinitions));
+    $table_mapping->setFieldNames('entity_test_revision_field_data', array_keys($this->storageDefinitions));
+
+    $this->storage->expects($this->once())
+      ->method('getTableMapping')
+      ->will($this->returnValue($table_mapping));
+
+    $expected = array(
+      'entity_test' => array(
+        'description' => 'The base table for entity_test entities.',
+        'fields' => array(
+          'id' => array(
+            'description' => 'The id field.',
+            'type' => 'serial',
+            'not null' => TRUE,
+          ),
+          'revision_id' => array(
+            'description' => 'The revision_id field.',
+            'type' => 'int',
+          ),
+          'langcode' => array(
+            'description' => 'The langcode field.',
+            'type' => 'varchar',
+            'not null' => TRUE,
+          )
+        ),
+        'primary key' => array('id'),
+        'indexes' => array(),
+        'unique keys' => array(
+          'entity_test__revision_id' => array('revision_id'),
+        ),
+        'foreign keys' => array(
+          'entity_test__revision' => array(
+            'table' => 'entity_test_revision',
+            'columns' => array('revision_id' => 'revision_id'),
+          ),
+        ),
+      ),
+      'entity_test_revision' => array(
+        'description' => 'The revision table for entity_test entities.',
+        'fields' => array(
+          'id' => array(
+            'description' => 'The id field.',
+            'type' => 'int',
+            'not null' => TRUE,
+          ),
+          'revision_id' => array(
+            'description' => 'The revision_id field.',
+            'type' => 'serial',
+          ),
+          'langcode' => array(
+            'description' => 'The langcode field.',
+            'type' => 'varchar',
+            'not null' => TRUE,
+          ),
+        ),
+        'primary key' => array('revision_id'),
+        'indexes' => array(
+          'entity_test__id' => array('id'),
+        ),
+        'foreign keys' => array(
+          'entity_test__revisioned' => array(
+            'table' => 'entity_test',
+            'columns' => array('id' => 'id'),
+          ),
+        ),
+      ),
+      'entity_test_field_data' => array(
+        'description' => 'The data table for entity_test entities.',
+        'fields' => array(
+          'id' => array(
+            'description' => 'The id field.',
+            'type' => 'int',
+            'not null' => TRUE,
+          ),
+          'revision_id' => array(
+            'description' => 'The revision_id field.',
+            'type' => 'int',
+          ),
+          'langcode' => array(
+            'description' => 'The langcode field.',
+            'type' => 'varchar',
+            'not null' => TRUE,
+          ),
+        ),
+        'primary key' => array('id', 'langcode'),
+        'indexes' => array(
+          'entity_test__revision_id' => array('revision_id'),
+        ),
+        'foreign keys' => array(
+          'entity_test' => array(
+            'table' => 'entity_test',
+            'columns' => array('id' => 'id'),
+          ),
+        ),
+      ),
+      'entity_test_revision_field_data' => array(
+        'description' => 'The revision data table for entity_test entities.',
+        'fields' => array(
+          'id' => array(
+            'description' => 'The id field.',
+            'type' => 'int',
+            'not null' => TRUE,
+          ),
+          'revision_id' => array(
+            'description' => 'The revision_id field.',
+            'type' => 'int',
+          ),
+          'langcode' => array(
+            'description' => 'The langcode field.',
+            'type' => 'varchar',
+            'not null' => TRUE,
+          ),
+        ),
+        'primary key' => array('revision_id', 'langcode'),
+        'indexes' => array(),
+        'foreign keys' => array(
+          'entity_test' => array(
+            'table' => 'entity_test',
+            'columns' => array('id' => 'id'),
+          ),
+          'entity_test__revision' => array(
+            'table' => 'entity_test_revision',
+            'columns' => array('revision_id' => 'revision_id'),
+          ),
+        ),
+      ),
+    );
+
+    $actual = $this->schemaHandler->getSchema();
+
+    $this->assertEquals($expected, $actual);
+  }
+
+  /**
+   * Sets up the schema handler.
+   *
+   * This uses the field definitions set in $this->fieldDefinitions.
+   */
+  protected function setUpSchemaHandler() {
+    $this->entityManager->expects($this->once())
+      ->method('getFieldStorageDefinitions')
+      ->with($this->entityType->id())
+      ->will($this->returnValue($this->storageDefinitions));
+    $this->schemaHandler = new ContentEntitySchemaHandler(
+      $this->entityManager,
+      $this->entityType,
+      $this->storage
+    );
+  }
+
+  /**
+   * Sets up a field definition.
+   *
+   * @param string $field_name
+   *   The field name.
+   * @param array $schema
+   *   The schema array of the field definition, as returned from
+   *   FieldDefinitionInterface::schema().
+   */
+  public function setUpStorageDefinition($field_name, array $schema) {
+    $this->storageDefinitions[$field_name] = $this->getMock('Drupal\Core\Field\FieldStorageDefinitionInterface');
+    // getDescription() is called once for each table.
+    $this->storageDefinitions[$field_name]->expects($this->any())
+      ->method('getDescription')
+      ->will($this->returnValue("The $field_name field."));
+    // getSchema() is called once for each table.
+    $this->storageDefinitions[$field_name]->expects($this->any())
+      ->method('getSchema')
+      ->will($this->returnValue($schema));
+    $this->storageDefinitions[$field_name]->expects($this->once())
+      ->method('getColumns')
+      ->will($this->returnValue($schema['columns']));
+  }
+
+}
diff --git a/core/tests/Drupal/Tests/Core/Entity/Sql/DefaultTableMappingTest.php b/core/tests/Drupal/Tests/Core/Entity/Sql/DefaultTableMappingTest.php
new file mode 100644
index 000000000000..196ff7784a92
--- /dev/null
+++ b/core/tests/Drupal/Tests/Core/Entity/Sql/DefaultTableMappingTest.php
@@ -0,0 +1,268 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Tests\Core\Entity\Sql\DefaultTableMappingTest.
+ */
+
+namespace Drupal\Tests\Core\Entity\Sql;
+use Drupal\Core\Entity\Sql\DefaultTableMapping;
+use Drupal\Tests\UnitTestCase;
+
+/**
+ * Tests the default table mapping class.
+ *
+ * @coversDefaultClass \Drupal\Core\Entity\Sql\DefaultTableMapping
+ *
+ * @group Drupal
+ * @group Entity
+ */
+class DefaultTableMappingTest extends UnitTestCase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function getInfo() {
+    return [
+      'name' => 'Default table mapping',
+      'description' => 'Check that the default table mapping works.',
+      'group' => 'Entity',
+    ];
+  }
+
+  /**
+   * Tests DefaultTableMapping::getTableNames().
+   *
+   * @covers ::getTableNames()
+   */
+  public function testGetTableNames() {
+    // The storage definitions are only used in getColumnNames() so we do not
+    // need to provide any here.
+    $table_mapping = new DefaultTableMapping([]);
+    $this->assertSame([], $table_mapping->getTableNames());
+
+    $table_mapping->setFieldNames('foo', []);
+    $this->assertSame(['foo'], $table_mapping->getTableNames());
+
+    $table_mapping->setFieldNames('bar', []);
+    $this->assertSame(['foo', 'bar'], $table_mapping->getTableNames());
+
+    $table_mapping->setExtraColumns('baz', []);
+    $this->assertSame(['foo', 'bar', 'baz'], $table_mapping->getTableNames());
+
+    // Test that table names are not duplicated.
+    $table_mapping->setExtraColumns('foo', []);
+    $this->assertSame(['foo', 'bar', 'baz'], $table_mapping->getTableNames());
+  }
+
+  /**
+   * Tests DefaultTableMapping::getAllColumns().
+   *
+   * @covers ::__construct()
+   * @covers ::getAllColumns()
+   * @covers ::getFieldNames()
+   * @covers ::getColumnNames()
+   * @covers ::setFieldNames()
+   * @covers ::getExtraColumns()
+   * @covers ::setExtraColumns()
+   */
+  public function testGetAllColumns() {
+    // Set up single-column and multi-column definitions.
+    $definitions['id'] = $this->setUpDefinition(['value']);
+    $definitions['name'] = $this->setUpDefinition(['value']);
+    $definitions['type'] = $this->setUpDefinition(['value']);
+    $definitions['description'] = $this->setUpDefinition(['value', 'format']);
+    $definitions['owner'] = $this->setUpDefinition([
+      'target_id',
+      'target_revision_id',
+    ]);
+
+    $table_mapping = new DefaultTableMapping($definitions);
+    $expected = [];
+    $this->assertSame($expected, $table_mapping->getAllColumns('test'));
+
+    // Test adding field columns.
+    $table_mapping->setFieldNames('test', ['id']);
+    $expected = ['id'];
+    $this->assertSame($expected, $table_mapping->getAllColumns('test'));
+
+    $table_mapping->setFieldNames('test', ['id', 'name']);
+    $expected = ['id', 'name'];
+    $this->assertSame($expected, $table_mapping->getAllColumns('test'));
+
+    $table_mapping->setFieldNames('test', ['id', 'name', 'type']);
+    $expected = ['id', 'name', 'type'];
+    $this->assertSame($expected, $table_mapping->getAllColumns('test'));
+
+    $table_mapping->setFieldNames('test', [
+      'id',
+      'name',
+      'type',
+      'description',
+    ]);
+    $expected = [
+      'id',
+      'name',
+      'type',
+      'description__value',
+      'description__format',
+    ];
+    $this->assertSame($expected, $table_mapping->getAllColumns('test'));
+
+    $table_mapping->setFieldNames('test', [
+      'id',
+      'name',
+      'type',
+      'description',
+      'owner',
+    ]);
+    $expected = [
+      'id',
+      'name',
+      'type',
+      'description__value',
+      'description__format',
+      'owner__target_id',
+      'owner__target_revision_id',
+    ];
+    $this->assertSame($expected, $table_mapping->getAllColumns('test'));
+
+    // Test adding extra columns.
+    $table_mapping->setFieldNames('test', []);
+    $table_mapping->setExtraColumns('test', ['default_langcode']);
+    $expected = ['default_langcode'];
+    $this->assertSame($expected, $table_mapping->getAllColumns('test'));
+
+    $table_mapping->setExtraColumns('test', [
+      'default_langcode',
+      'default_revision',
+    ]);
+    $expected = ['default_langcode', 'default_revision'];
+    $this->assertSame($expected, $table_mapping->getAllColumns('test'));
+
+    // Test adding both field and extra columns.
+    $table_mapping->setFieldNames('test', [
+      'id',
+      'name',
+      'type',
+      'description',
+      'owner',
+    ]);
+    $table_mapping->setExtraColumns('test', [
+      'default_langcode',
+      'default_revision',
+    ]);
+    $expected = [
+      'id',
+      'name',
+      'type',
+      'description__value',
+      'description__format',
+      'owner__target_id',
+      'owner__target_revision_id',
+      'default_langcode',
+      'default_revision',
+    ];
+    $this->assertSame($expected, $table_mapping->getAllColumns('test'));
+  }
+
+  /**
+   * Tests DefaultTableMapping::getFieldNames().
+   *
+   * @covers ::getFieldNames()
+   * @covers ::setFieldNames()
+   */
+  public function testGetFieldNames() {
+    // The storage definitions are only used in getColumnNames() so we do not
+    // need to provide any here.
+    $table_mapping = new DefaultTableMapping([]);
+
+    // Test that requesting the list of field names for a table for which no
+    // fields have been added does not fail.
+    $this->assertSame([], $table_mapping->getFieldNames('foo'));
+
+    $return = $table_mapping->setFieldNames('foo', ['id', 'name', 'type']);
+    $this->assertSame($table_mapping, $return);
+    $expected = ['id', 'name', 'type'];
+    $this->assertSame($expected, $table_mapping->getFieldNames('foo'));
+    $this->assertSame([], $table_mapping->getFieldNames('bar'));
+
+    $return = $table_mapping->setFieldNames('bar', ['description', 'owner']);
+    $this->assertSame($table_mapping, $return);
+    $expected = ['description', 'owner'];
+    $this->assertSame($expected, $table_mapping->getFieldNames('bar'));
+    // Test that the previously added field names are unaffected.
+    $expected = ['id', 'name', 'type'];
+    $this->assertSame($expected, $table_mapping->getFieldNames('foo'));
+  }
+
+  /**
+   * Tests DefaultTableMapping::getColumnNames().
+   *
+   * @covers ::__construct()
+   * @covers ::getColumnNames()
+   */
+  public function testGetColumnNames() {
+    $definitions['test'] = $this->setUpDefinition([]);
+    $table_mapping = new DefaultTableMapping($definitions);
+    $expected = [];
+    $this->assertSame($expected, $table_mapping->getColumnNames('test'));
+
+    $definitions['test'] = $this->setUpDefinition(['value']);
+    $table_mapping = new DefaultTableMapping($definitions);
+    $expected = ['value' => 'test'];
+    $this->assertSame($expected, $table_mapping->getColumnNames('test'));
+
+    $definitions['test'] = $this->setUpDefinition(['value', 'format']);
+    $table_mapping = new DefaultTableMapping($definitions);
+    $expected = ['value' => 'test__value', 'format' => 'test__format'];
+    $this->assertSame($expected, $table_mapping->getColumnNames('test'));
+  }
+
+  /**
+   * Tests DefaultTableMapping::getExtraColumns().
+   *
+   * @covers ::getExtraColumns()
+   * @covers ::setExtraColumns()
+   */
+  public function testGetExtraColumns() {
+    // The storage definitions are only used in getColumnNames() so we do not
+    // need to provide any here.
+    $table_mapping = new DefaultTableMapping([]);
+
+    // Test that requesting the list of field names for a table for which no
+    // fields have been added does not fail.
+    $this->assertSame([], $table_mapping->getExtraColumns('foo'));
+
+    $return = $table_mapping->setExtraColumns('foo', ['id', 'name', 'type']);
+    $this->assertSame($table_mapping, $return);
+    $expected = ['id', 'name', 'type'];
+    $this->assertSame($expected, $table_mapping->getExtraColumns('foo'));
+    $this->assertSame([], $table_mapping->getExtraColumns('bar'));
+
+    $return = $table_mapping->setExtraColumns('bar', ['description', 'owner']);
+    $this->assertSame($table_mapping, $return);
+    $expected = ['description', 'owner'];
+    $this->assertSame($expected, $table_mapping->getExtraColumns('bar'));
+    // Test that the previously added field names are unaffected.
+    $expected = ['id', 'name', 'type'];
+    $this->assertSame($expected, $table_mapping->getExtraColumns('foo'));
+  }
+
+  /**
+   * Sets up a field storage definition for the test.
+   *
+   * @param array $column_names
+   *   An array of column names for the storage definition.
+   *
+   * @return \Drupal\Core\Field\FieldStorageDefinitionInterface|\PHPUnit_Framework_MockObject_MockObject
+   */
+  protected function setUpDefinition(array $column_names) {
+    $definition = $this->getMock('Drupal\Core\Field\FieldStorageDefinitionInterface');
+    $definition->expects($this->any())
+      ->method('getColumns')
+      ->will($this->returnValue(array_fill_keys($column_names, [])));
+    return $definition;
+  }
+
+}
-- 
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