diff --git a/modules/field/field.api.php b/modules/field/field.api.php
index a3d8bdbf464eddd1ba2c96da7af8b3cdd124af22..9b2d3bb4f9d8ed75cc165c101739bb3a559d1ad6 100644
--- a/modules/field/field.api.php
+++ b/modules/field/field.api.php
@@ -211,6 +211,9 @@ function hook_field_info_alter(&$info) {
 /**
  * Define the Field API schema for a field structure.
  *
+ * This hook MUST be defined in .install for it to be detected during
+ * installation and upgrade.
+ *
  * @param $field
  *   A field structure.
  *
diff --git a/modules/field/field.crud.inc b/modules/field/field.crud.inc
index e7fa00146dbfeba0ebc6fec81bf0489dba911781..96e44bf0e759ac3dd3f6fa21d896fc4c57110766 100644
--- a/modules/field/field.crud.inc
+++ b/modules/field/field.crud.inc
@@ -317,6 +317,7 @@ function field_create_field($field) {
   $field['storage']['module'] = $storage_type['module'];
   $field['storage']['active'] = 1;
   // Collect storage information.
+  module_load_install($field['module']);
   $schema = (array) module_invoke($field['module'], 'field_schema', $field);
   $schema += array('columns' => array(), 'indexes' => array());
   // 'columns' are hardcoded in the field type.
@@ -426,6 +427,7 @@ function field_update_field($field) {
 
   // Collect the new storage information, since what is in
   // $prior_field may no longer be right.
+  module_load_install($field['module']);
   $schema = (array) module_invoke($field['module'], 'field_schema', $field);
   $schema += array('columns' => array(), 'indexes' => array());
   // 'columns' are hardcoded in the field type.
@@ -552,6 +554,7 @@ function field_read_fields($params = array(), $include_additional = array()) {
     module_invoke_all('field_read_field', $field);
 
     // Populate storage information.
+    module_load_install($field['module']);
     $schema = (array) module_invoke($field['module'], 'field_schema', $field);
     $schema += array('columns' => array(), 'indexes' => array());
     $field['columns'] = $schema['columns'];
diff --git a/modules/field/modules/list/list.install b/modules/field/modules/list/list.install
new file mode 100644
index 0000000000000000000000000000000000000000..38bab8e7d7576ecbc16f44785a7070929fea7b0f
--- /dev/null
+++ b/modules/field/modules/list/list.install
@@ -0,0 +1,46 @@
+<?php
+// $Id$
+
+/**
+ * @file
+ * Install, update and uninstall functions for the list module.
+ */
+
+/**
+ * Implements hook_field_schema().
+ */
+function list_field_schema($field) {
+  switch ($field['type']) {
+    case 'list_text':
+      $columns = array(
+        'value' => array(
+          'type' => 'varchar',
+          'length' => 255,
+          'not null' => FALSE,
+        ),
+      );
+      break;
+    case 'list_number':
+      $columns = array(
+        'value' => array(
+          'type' => 'float',
+          'not null' => FALSE,
+        ),
+      );
+      break;
+    default:
+      $columns = array(
+        'value' => array(
+          'type' => 'int',
+          'not null' => FALSE,
+        ),
+      );
+      break;
+  }
+  return array(
+    'columns' => $columns,
+    'indexes' => array(
+      'value' => array('value'),
+    ),
+  );
+}
\ No newline at end of file
diff --git a/modules/field/modules/list/list.module b/modules/field/modules/list/list.module
index 8aa3489a2d2d1e41aeffe734de4f01fd2a54c2b8..bbf6bd9ffde21b5b21f29192594e50a84a015970 100644
--- a/modules/field/modules/list/list.module
+++ b/modules/field/modules/list/list.module
@@ -55,45 +55,6 @@ function list_field_info() {
   );
 }
 
-/**
- * Implements hook_field_schema().
- */
-function list_field_schema($field) {
-  switch ($field['type']) {
-    case 'list_text':
-      $columns = array(
-        'value' => array(
-          'type' => 'varchar',
-          'length' => 255,
-          'not null' => FALSE,
-        ),
-      );
-      break;
-    case 'list_number':
-      $columns = array(
-        'value' => array(
-          'type' => 'float',
-          'not null' => FALSE,
-        ),
-      );
-      break;
-    default:
-      $columns = array(
-        'value' => array(
-          'type' => 'int',
-          'not null' => FALSE,
-        ),
-      );
-      break;
-  }
-  return array(
-    'columns' => $columns,
-    'indexes' => array(
-      'value' => array('value'),
-    ),
-  );
-}
-
 /**
  * Implements hook_field_settings_form().
  *
diff --git a/modules/field/modules/number/number.install b/modules/field/modules/number/number.install
new file mode 100644
index 0000000000000000000000000000000000000000..d5e6b1cf2d33b21f65f168468f873d450fdd4a5f
--- /dev/null
+++ b/modules/field/modules/number/number.install
@@ -0,0 +1,46 @@
+<?php
+// $Id$
+
+/**
+ * @file
+ * Install, update and uninstall functions for the number module.
+ */
+
+/**
+ * Implements hook_field_schema().
+ */
+function number_field_schema($field) {
+  switch ($field['type']) {
+    case 'number_integer' :
+      $columns = array(
+        'value' => array(
+          'type' => 'int',
+          'not null' => FALSE
+        ),
+      );
+      break;
+
+    case 'number_float' :
+      $columns = array(
+        'value' => array(
+          'type' => 'float',
+          'not null' => FALSE
+        ),
+      );
+      break;
+
+    case 'number_decimal' :
+      $columns = array(
+        'value' => array(
+          'type' => 'numeric',
+          'precision' => $field['settings']['precision'],
+          'scale' => $field['settings']['scale'],
+          'not null' => FALSE
+        ),
+      );
+      break;
+  }
+  return array(
+    'columns' => $columns,
+  );
+}
diff --git a/modules/field/modules/number/number.module b/modules/field/modules/number/number.module
index d9386eda73aa6d69052d77093c9b7614434e4841..cfc1b6d62c55fab162859cacba1c3ed252f3d698 100644
--- a/modules/field/modules/number/number.module
+++ b/modules/field/modules/number/number.module
@@ -50,45 +50,6 @@ function number_field_info() {
   );
 }
 
-/**
- * Implements hook_field_schema().
- */
-function number_field_schema($field) {
-  switch ($field['type']) {
-    case 'number_integer' :
-      $columns = array(
-        'value' => array(
-          'type' => 'int',
-          'not null' => FALSE
-        ),
-      );
-      break;
-
-    case 'number_float' :
-      $columns = array(
-        'value' => array(
-          'type' => 'float',
-          'not null' => FALSE
-        ),
-      );
-      break;
-
-    case 'number_decimal' :
-      $columns = array(
-        'value' => array(
-          'type' => 'numeric',
-          'precision' => $field['settings']['precision'],
-          'scale' => $field['settings']['scale'],
-          'not null' => FALSE
-        ),
-      );
-      break;
-  }
-  return array(
-    'columns' => $columns,
-  );
-}
-
 /**
  * Implements hook_field_settings_form().
  */
diff --git a/modules/field/modules/text/text.install b/modules/field/modules/text/text.install
new file mode 100644
index 0000000000000000000000000000000000000000..c2c5b2ec7455d08caee74e236c082af0feda0330
--- /dev/null
+++ b/modules/field/modules/text/text.install
@@ -0,0 +1,60 @@
+<?php
+// $Id$
+
+/**
+ * @file
+ * Install, update and uninstall functions for the text module.
+ */
+
+/**
+ * Implements hook_field_schema().
+ */
+function text_field_schema($field) {
+  switch ($field['type']) {
+    case 'text':
+      $columns = array(
+        'value' => array(
+          'type' => 'varchar',
+          'length' => $field['settings']['max_length'],
+          'not null' => FALSE,
+        ),
+      );
+      break;
+    case 'text_long':
+      $columns = array(
+        'value' => array(
+          'type' => 'text',
+          'size' => 'big',
+          'not null' => FALSE,
+        ),
+      );
+      break;
+    case 'text_with_summary':
+      $columns = array(
+        'value' => array(
+          'type' => 'text',
+          'size' => 'big',
+          'not null' => FALSE,
+        ),
+        'summary' => array(
+          'type' => 'text',
+          'size' => 'big',
+          'not null' => FALSE,
+        ),
+      );
+      break;
+  }
+  $columns += array(
+    'format' => array(
+      'type' => 'int',
+      'unsigned' => TRUE,
+      'not null' => FALSE,
+    ),
+  );
+  return array(
+    'columns' => $columns,
+    'indexes' => array(
+      'format' => array('format'),
+    ),
+  );
+}
diff --git a/modules/field/modules/text/text.module b/modules/field/modules/text/text.module
index 600081c1b89d8ec59f5c3c92b5544088d233127f..45ace5ee23dfb17db3cdaf3d94ec2fbbd39a5dd3 100644
--- a/modules/field/modules/text/text.module
+++ b/modules/field/modules/text/text.module
@@ -57,59 +57,6 @@ function text_field_info() {
   );
 }
 
-/**
- * Implements hook_field_schema().
- */
-function text_field_schema($field) {
-  switch ($field['type']) {
-    case 'text':
-      $columns = array(
-        'value' => array(
-          'type' => 'varchar',
-          'length' => $field['settings']['max_length'],
-          'not null' => FALSE,
-        ),
-      );
-      break;
-    case 'text_long':
-      $columns = array(
-        'value' => array(
-          'type' => 'text',
-          'size' => 'big',
-          'not null' => FALSE,
-        ),
-      );
-      break;
-    case 'text_with_summary':
-      $columns = array(
-        'value' => array(
-          'type' => 'text',
-          'size' => 'big',
-          'not null' => FALSE,
-        ),
-        'summary' => array(
-          'type' => 'text',
-          'size' => 'big',
-          'not null' => FALSE,
-        ),
-      );
-      break;
-  }
-  $columns += array(
-    'format' => array(
-      'type' => 'int',
-      'unsigned' => TRUE,
-      'not null' => FALSE,
-    ),
-  );
-  return array(
-    'columns' => $columns,
-    'indexes' => array(
-      'format' => array('format'),
-    ),
-  );
-}
-
 /**
  * Implements hook_field_settings_form().
  */
diff --git a/modules/field/tests/field_test.field.inc b/modules/field/tests/field_test.field.inc
index 6bb8dd87b30729c024f3c44f53551a774aecdb94..603eadd6acea3dad65b48eb6dbf337f746a77bcf 100644
--- a/modules/field/tests/field_test.field.inc
+++ b/modules/field/tests/field_test.field.inc
@@ -46,42 +46,6 @@ function field_test_field_info() {
   );
 }
 
-/**
- * Implements hook_field_schema().
- */
-function field_test_field_schema($field) {
-  if ($field['type'] == 'test_field') {
-    return array(
-      'columns' => array(
-        'value' => array(
-          'type' => 'int',
-          'size' => 'medium',
-          'not null' => FALSE,
-        ),
-      ),
-      'indexes' => array(
-        'value' => array('value'),
-      ),
-    );
-  }
-  else {
-    return array(
-      'columns' => array(
-        'shape' => array(
-          'type' => 'varchar',
-          'length' => 32,
-          'not null' => FALSE,
-        ),
-        'color' => array(
-          'type' => 'varchar',
-          'length' => 32,
-          'not null' => FALSE,
-        ),
-      ),
-    );
-  }
-}
-
 /**
  * Implements hook_field_update_forbid().
  */
diff --git a/modules/field/tests/field_test.install b/modules/field/tests/field_test.install
index d16d79ee807eaf87c609bb11bde34caf52544d69..d4937b6208738982f825f2f6d9df0ed388ef2713 100644
--- a/modules/field/tests/field_test.install
+++ b/modules/field/tests/field_test.install
@@ -106,3 +106,39 @@ function field_test_schema() {
 
   return $schema;
 }
+
+/**
+ * Implements hook_field_schema().
+ */
+function field_test_field_schema($field) {
+  if ($field['type'] == 'test_field') {
+    return array(
+      'columns' => array(
+        'value' => array(
+          'type' => 'int',
+          'size' => 'medium',
+          'not null' => FALSE,
+        ),
+      ),
+      'indexes' => array(
+        'value' => array('value'),
+      ),
+    );
+  }
+  else {
+    return array(
+      'columns' => array(
+        'shape' => array(
+          'type' => 'varchar',
+          'length' => 32,
+          'not null' => FALSE,
+        ),
+        'color' => array(
+          'type' => 'varchar',
+          'length' => 32,
+          'not null' => FALSE,
+        ),
+      ),
+    );
+  }
+}
diff --git a/modules/file/file.field.inc b/modules/file/file.field.inc
index 38a24bde39cc026abc643c0e1d684ef1944c152e..5ac4cfed30c60088ae103de8db69b0d2cb8d6786 100644
--- a/modules/file/file.field.inc
+++ b/modules/file/file.field.inc
@@ -31,38 +31,6 @@ function file_field_info() {
   );
 }
 
-/**
- * Implements hook_field_schema().
- */
-function file_field_schema($field) {
-  return array(
-    'columns' => array(
-      'fid' => array(
-        'description' => 'The {files}.fid being referenced in this field.',
-        'type' => 'int',
-        'not null' => FALSE,
-        'unsigned' => TRUE,
-      ),
-      'display' => array(
-        'description' => 'Flag to control whether this file should be displayed when viewing content.',
-        'type' => 'int',
-        'size' => 'tiny',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'default' => 1,
-      ),
-      'description' => array(
-        'description' => 'A description of the file.',
-        'type' => 'text',
-        'not null' => FALSE,
-      ),
-    ),
-    'indexes' => array(
-      'fid' => array('fid'),
-    ),
-  );
-}
-
 /**
  * Implements hook_field_settings_form().
  */
diff --git a/modules/file/file.install b/modules/file/file.install
index c92068e98e0eeda52be0cf7c39f63df8ced69fed..fdf9088052ad3bb9a269dccf315212279fdc1757 100644
--- a/modules/file/file.install
+++ b/modules/file/file.install
@@ -6,6 +6,38 @@
  * Install, update and uninstall functions for File module.
  */
 
+/**
+ * Implements hook_field_schema().
+ */
+function file_field_schema($field) {
+  return array(
+    'columns' => array(
+      'fid' => array(
+        'description' => 'The {files}.fid being referenced in this field.',
+        'type' => 'int',
+        'not null' => FALSE,
+        'unsigned' => TRUE,
+      ),
+      'display' => array(
+        'description' => 'Flag to control whether this file should be displayed when viewing content.',
+        'type' => 'int',
+        'size' => 'tiny',
+        'unsigned' => TRUE,
+        'not null' => TRUE,
+        'default' => 1,
+      ),
+      'description' => array(
+        'description' => 'A description of the file.',
+        'type' => 'text',
+        'not null' => FALSE,
+      ),
+    ),
+    'indexes' => array(
+      'fid' => array('fid'),
+    ),
+  );
+}
+
 /**
  * Implements hook_requirements().
  *
diff --git a/modules/image/image.field.inc b/modules/image/image.field.inc
index d8a1788ca2f31b1236473446bf41f50644e43ed9..106e68e2619c869e6ad609626466441645c5c7f0 100644
--- a/modules/image/image.field.inc
+++ b/modules/image/image.field.inc
@@ -33,37 +33,6 @@ function image_field_info() {
   );
 }
 
-/**
- * Implements hook_field_schema().
- */
-function image_field_schema($field) {
-  return array(
-    'columns' => array(
-      'fid' => array(
-        'description' => 'The {files}.fid being referenced in this field.',
-        'type' => 'int',
-        'not null' => FALSE,
-        'unsigned' => TRUE,
-      ),
-      'alt' => array(
-        'description' => "Alternative image text, for the image's 'alt' attribute.",
-        'type' => 'varchar',
-        'length' => 128,
-        'not null' => FALSE,
-      ),
-      'title' => array(
-        'description' => "Image title text, for the image's 'title' attribute.",
-        'type' => 'varchar',
-        'length' => 128,
-        'not null' => FALSE,
-      ),
-    ),
-    'indexes' => array(
-      'fid' => array('fid'),
-    ),
-  );
-}
-
 /**
  * Implements hook_field_settings_form().
  */
diff --git a/modules/image/image.install b/modules/image/image.install
index 40c0e9ddf1d75a3c64d635289cfa4032745f4a6b..3ebf6eef58380d59270ed983f558234f3434c5ba 100644
--- a/modules/image/image.install
+++ b/modules/image/image.install
@@ -107,6 +107,37 @@ function image_schema() {
   return $schema;
 }
 
+/**
+ * Implements hook_field_schema().
+ */
+function image_field_schema($field) {
+  return array(
+    'columns' => array(
+      'fid' => array(
+        'description' => 'The {files}.fid being referenced in this field.',
+        'type' => 'int',
+        'not null' => FALSE,
+        'unsigned' => TRUE,
+      ),
+      'alt' => array(
+        'description' => "Alternative image text, for the image's 'alt' attribute.",
+        'type' => 'varchar',
+        'length' => 128,
+        'not null' => FALSE,
+      ),
+      'title' => array(
+        'description' => "Image title text, for the image's 'title' attribute.",
+        'type' => 'varchar',
+        'length' => 128,
+        'not null' => FALSE,
+      ),
+    ),
+    'indexes' => array(
+      'fid' => array('fid'),
+    ),
+  );
+}
+
 /**
  * Install the schema for users upgrading from the contributed module.
  */
diff --git a/modules/taxonomy/taxonomy.install b/modules/taxonomy/taxonomy.install
index cc251220670268b00065f809f606bf693a127673..86171b77d0dc292fb10013934bac503a2f303ac0 100644
--- a/modules/taxonomy/taxonomy.install
+++ b/modules/taxonomy/taxonomy.install
@@ -221,6 +221,24 @@ function taxonomy_schema() {
   return $schema;
 }
 
+/**
+ * Implements hook_field_schema().
+ */
+function taxonomy_field_schema($field) {
+  return array(
+    'columns' => array(
+      'tid' => array(
+        'type' => 'int',
+        'unsigned' => TRUE,
+        'not null' => FALSE,
+      ),
+    ),
+    'indexes' => array(
+      'tid' => array('tid'),
+    ),
+  );
+}
+
 /**
  * Implements hook_update_dependencies().
  */
diff --git a/modules/taxonomy/taxonomy.module b/modules/taxonomy/taxonomy.module
index cb1f255920be5404bf417bd1ee11ea108c2ff90b..45ae7c091e414f212e6ad9b58eda271775034098 100644
--- a/modules/taxonomy/taxonomy.module
+++ b/modules/taxonomy/taxonomy.module
@@ -1117,24 +1117,6 @@ function taxonomy_options_list($field) {
   return $function($field);
 }
 
-/**
- * Implements hook_field_schema().
- */
-function taxonomy_field_schema($field) {
-  return array(
-    'columns' => array(
-      'tid' => array(
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => FALSE,
-      ),
-    ),
-    'indexes' => array(
-      'tid' => array('tid'),
-    ),
-  );
-}
-
 /**
  * Implements hook_field_validate().
  *