1 files changed, 501 insertions, 490 deletions
diff --git a/textbook_companion.install b/textbook_companion.install
index dad05a8..374bd12 100755
--- a/textbook_companion.install
+++ b/textbook_companion.install
@@ -1,501 +1,512 @@
 <?php
 // $Id$
-
 /**
  * Implementation of hook_install().
  */
-function textbook_companion_install() {
-  // Create tables.
-  drupal_install_schema('textbook_companion');
-  variable_set('textbook_companion_emails', '');
-  variable_set('textbook_companion_from_email', '');
-  variable_set('textbook_companion_source_extensions', '');
-  variable_set('textbook_companion_dependency_extensions', '');
-  variable_set('textbook_companion_result_extensions', '');
-  variable_set('textbook_companion_xcos_extensions', '');
-}
-
+function textbook_companion_install()
+  {
+    // Create tables.
+    drupal_install_schema('textbook_companion');
+    variable_set('textbook_companion_emails', '');
+    variable_set('textbook_companion_from_email', '');
+    variable_set('textbook_companion_source_extensions', '');
+    variable_set('textbook_companion_dependency_extensions', '');
+    variable_set('textbook_companion_result_extensions', '');
+    variable_set('textbook_companion_xcos_extensions', '');
+  }
 /**
  * Implementation of hook_uninstall().
  */
-function textbook_companion_uninstall() {
-  // Remove tables.
-  drupal_uninstall_schema('textbook_companion');
-  // Remove variables
-  variable_del('textbook_companion_emails');
-  variable_del('textbook_companion_from_email');
-  variable_del('textbook_companion_source_extensions');
-  variable_del('textbook_companion_dependency_extensions');
-  variable_del('textbook_companion_result_extensions');
-  variable_del('textbook_companion_xcos_extensions');
-}
-
+function textbook_companion_uninstall()
+  {
+    // Remove tables.
+    drupal_uninstall_schema('textbook_companion');
+    // Remove variables
+    variable_del('textbook_companion_emails');
+    variable_del('textbook_companion_from_email');
+    variable_del('textbook_companion_source_extensions');
+    variable_del('textbook_companion_dependency_extensions');
+    variable_del('textbook_companion_result_extensions');
+    variable_del('textbook_companion_xcos_extensions');
+  }
 /**
  * Implementation of hook_schema().
  */
-function textbook_companion_schema() {
-
-  /* proposal */
-  $schema['textbook_companion_proposal'] = array(
-    'description' => t('TODO: please describe this table!'),
-    'fields' => array(
-      'id' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'serial',
-        'not null' => TRUE,
-      ),
-      'uid' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'int',
-        'not null' => TRUE,
-      ),
-      'approver_uid' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'int',
-        'not null' => TRUE,
-      ),
-      'full_name' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'varchar',
-        'length' => '50',
-        'not null' => TRUE,
-      ),
-      'mobile' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'varchar',
-        'length' => '15',
-        'not null' => TRUE,
-      ),
-      'how_project' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'varchar',
-        'length' => '50',
-        'not null' => TRUE,
-      ),
-      'course' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'varchar',
-        'length' => '50',
-        'not null' => TRUE,
-      ),
-      'branch' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'varchar',
-        'length' => '50',
-        'not null' => TRUE,
-      ),
-      'university' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'varchar',
-        'length' => '100',
-        'not null' => TRUE,
-      ),
-      'faculty' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'varchar',
-        'length' => '100',
-        'not null' => TRUE,
-      ),
-      'reviewer' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'varchar',
-        'length' => '100',
-        'not null' => TRUE,
-      ),
-      'completion_date' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'int',
-        'not null' => TRUE,
-      ),
-      'creation_date' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'int',
-        'not null' => TRUE,
-      ),
-      'approval_date' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'int',
-        'not null' => TRUE,
-      ),
-      'proposal_status' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'int',
-        'not null' => TRUE,
-      ),
-      'message' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'text',
-        'size' => 'medium',
-        'not null' => TRUE,
-      ),
-    ),
-    'primary key' => array('id'),
-    'unique keys' => array(
-      'id' => array('id')
-    ),
-  );
-
-  /* book preference */
-  $schema['textbook_companion_preference'] = array(
-    'description' => t('TODO: please describe this table!'),
-    'fields' => array(
-      'id' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'serial',
-        'not null' => TRUE,
-      ),
-      'proposal_id' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'int',
-        'not null' => TRUE,
-      ),
-      'pref_number' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'int',
-        'not null' => TRUE,
-      ),
-      'book' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'varchar',
-        'length' => '100',
-        'not null' => TRUE,
-      ),
-      'author' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'varchar',
-        'length' => '100',
-        'not null' => TRUE,
-      ),
-      'isbn' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'varchar',
-        'length' => '25',
-        'not null' => TRUE,
-      ),
-      'publisher' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'varchar',
-        'length' => '50',
-        'not null' => TRUE,
-      ),
-      'edition' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'varchar',
-        'length' => '2',
-        'not null' => TRUE,
-      ),
-      'year' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'int',
-        'not null' => TRUE,
-      ),
-			'category' => array(
-				'description' => t('TODO: please describe this field!'),
-				'type' => 'int',
-				'not null' => TRUE,
-			),
-      'approval_status' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'int',
-        'not null' => TRUE,
-      ),
-    ),
-    'primary key' => array('id'),
-    'unique keys' => array(
-      'id' => array('id')
-    ),
-  );
-
-  /* chapter */
-  $schema['textbook_companion_chapter'] = array(
-    'description' => t('TODO: please describe this table!'),
-    'fields' => array(
-      'id' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'serial',
-        'not null' => TRUE,
-      ),
-      'preference_id' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'int',
-        'not null' => TRUE,
-      ),
-      'number' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'int',
-        'not null' => TRUE,
-      ),
-      'name' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'varchar',
-        'length' => '255',
-        'not null' => TRUE,
-      ),
-    ),
-    'primary key' => array('id'),
-  );
-
-  /* examples */
-  $schema['textbook_companion_example'] = array(
-    'description' => t('TODO: please describe this table!'),
-    'fields' => array(
-      'id' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'serial',
-        'not null' => TRUE,
-      ),
-      'chapter_id' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'int',
-        'not null' => TRUE,
-      ),
-      'approver_uid' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'int',
-        'not null' => TRUE,
-      ),
-      'number' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'varchar',
-        'length' => '10',
-        'not null' => TRUE,
-      ),
-      'caption' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'varchar',
-        'length' => '255',
-        'not null' => TRUE,
-      ),
-      'approval_date' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'int',
-        'not null' => TRUE,
-      ),
-      'approval_status' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'int',
-        'not null' => TRUE,
-      ),
-      'timestamp' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'int',
-        'not null' => TRUE,
-      ),
-    ),
-    'primary key' => array('id'),
-  );
-
-  /* example files */
-  $schema['textbook_companion_example_files'] = array(
-    'description' => t('TODO: please describe this table!'),
-    'fields' => array(
-      'id' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'serial',
-        'not null' => TRUE,
-      ),
-      'example_id' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'int',
-        'not null' => TRUE,
-      ),
-      'filename' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'varchar',
-        'length' => '255',
-        'not null' => TRUE,
-      ),
-      'filepath' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'varchar',
-        'length' => '500',
-        'not null' => TRUE,
-      ),
-      'filemime' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'varchar',
-        'length' => '255',
-        'not null' => TRUE,
-      ),
-      'filesize' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'int',
-        'not null' => TRUE,
-      ),
-      'filetype' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'varchar',
-        'length' => '1',
-        'not null' => TRUE,
-      ),
-      'caption' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'varchar',
-        'length' => '100',
-        'not null' => TRUE,
-      ),
-      'timestamp' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'int',
-        'not null' => TRUE,
-      ),
-    ),
-    'primary key' => array('id'),
-  );
-
-  /* dependency files */
-  $schema['textbook_companion_dependency_files'] = array(
-    'description' => t('TODO: please describe this table!'),
-    'fields' => array(
-      'id' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'serial',
-        'not null' => TRUE,
-      ),
-      'preference_id' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'int',
-        'not null' => TRUE,
-      ),
-      'filename' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'varchar',
-        'length' => '255',
-        'not null' => TRUE,
-      ),
-      'filepath' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'varchar',
-        'length' => '500',
-        'not null' => TRUE,
-      ),
-      'filemime' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'varchar',
-        'length' => '255',
-        'not null' => TRUE,
-      ),
-      'filesize' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'int',
-        'not null' => TRUE,
-      ),
-      'caption' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'varchar',
-        'length' => '100',
-        'not null' => TRUE,
-      ),
-      'description' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'text',
-        'size' => 'medium',
-        'not null' => TRUE,
-      ),
-      'timestamp' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'int',
-        'not null' => TRUE,
-      ),
-    ),
-    'primary key' => array('id'),
-  );
-
-  /* example - dependency files links */
-  $schema['textbook_companion_example_dependency'] = array(
-    'description' => t('TODO: please describe this table!'),
-    'fields' => array(
-      'id' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'serial',
-        'not null' => TRUE,
-      ),
-      'example_id' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'int',
-        'not null' => TRUE,
-      ),
-      'dependency_id' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'int',
-        'not null' => TRUE,
-      ),
-      'approval_status' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'int',
-        'not null' => TRUE,
-      ),
-      'timestamp' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'int',
-        'not null' => TRUE,
-      ),
-    ),
-    'primary key' => array('id'),
-  );
-
-  $schema['textbook_companion_notes'] = array(
-    'description' => t('TODO: please describe this table!'),
-    'fields' => array(
-      'id' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'serial',
-        'not null' => TRUE,
-      ),
-      'preference_id' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'int',
-        'not null' => TRUE,
-      ),
-      'notes' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'text',
-        'size' => 'medium',
-        'not null' => TRUE,
-      ),
-    ),
-    'primary key' => array('id'),
-  );
-
-  $schema['textbook_companion_feedback'] = array(
-    'description' => t('TODO: please describe this table!'),
-    'fields' => array(
-      'id' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'serial',
-        'not null' => TRUE,
-      ),
-      'example_id' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'int',
-        'not null' => TRUE,
-      ),
-      'uid' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'int',
-        'not null' => TRUE,
-      ),
-      'feedback' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'text',
-        'size' => 'medium',
-        'not null' => TRUE,
-      ),
-      'ip_address' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'varchar',
-        'length' => '16',
-        'not null' => TRUE,
-      ),
-      'timestamp' => array(
-        'description' => t('TODO: please describe this field!'),
-        'type' => 'int',
-        'not null' => TRUE,
-      ),
-    ),
-    'primary key' => array('id'),
-  );
-
-  return $schema;
-}
-
+function textbook_companion_schema()
+  {
+    /* proposal */
+    $schema['textbook_companion_proposal'] = array(
+        'description' => t('TODO: please describe this table!'),
+        'fields' => array(
+            'id' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'serial',
+                'not null' => TRUE
+            ),
+            'uid' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'int',
+                'not null' => TRUE
+            ),
+            'approver_uid' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'int',
+                'not null' => TRUE
+            ),
+            'full_name' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'varchar',
+                'length' => '50',
+                'not null' => TRUE
+            ),
+            'mobile' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'varchar',
+                'length' => '15',
+                'not null' => TRUE
+            ),
+            'how_project' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'varchar',
+                'length' => '50',
+                'not null' => TRUE
+            ),
+            'course' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'varchar',
+                'length' => '50',
+                'not null' => TRUE
+            ),
+            'branch' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'varchar',
+                'length' => '50',
+                'not null' => TRUE
+            ),
+            'university' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'varchar',
+                'length' => '100',
+                'not null' => TRUE
+            ),
+            'faculty' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'varchar',
+                'length' => '100',
+                'not null' => TRUE
+            ),
+            'reviewer' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'varchar',
+                'length' => '100',
+                'not null' => TRUE
+            ),
+            'completion_date' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'int',
+                'not null' => TRUE
+            ),
+            'creation_date' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'int',
+                'not null' => TRUE
+            ),
+            'approval_date' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'int',
+                'not null' => TRUE
+            ),
+            'proposal_status' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'int',
+                'not null' => TRUE
+            ),
+            'message' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'text',
+                'size' => 'medium',
+                'not null' => TRUE
+            )
+        ),
+        'primary key' => array(
+            'id'
+        ),
+        'unique keys' => array(
+            'id' => array(
+                'id'
+            )
+        )
+    );
+    /* book preference */
+    $schema['textbook_companion_preference'] = array(
+        'description' => t('TODO: please describe this table!'),
+        'fields' => array(
+            'id' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'serial',
+                'not null' => TRUE
+            ),
+            'proposal_id' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'int',
+                'not null' => TRUE
+            ),
+            'pref_number' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'int',
+                'not null' => TRUE
+            ),
+            'book' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'varchar',
+                'length' => '100',
+                'not null' => TRUE
+            ),
+            'author' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'varchar',
+                'length' => '100',
+                'not null' => TRUE
+            ),
+            'isbn' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'varchar',
+                'length' => '25',
+                'not null' => TRUE
+            ),
+            'publisher' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'varchar',
+                'length' => '50',
+                'not null' => TRUE
+            ),
+            'edition' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'varchar',
+                'length' => '2',
+                'not null' => TRUE
+            ),
+            'year' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'int',
+                'not null' => TRUE
+            ),
+            'category' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'int',
+                'not null' => TRUE
+            ),
+            'approval_status' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'int',
+                'not null' => TRUE
+            )
+        ),
+        'primary key' => array(
+            'id'
+        ),
+        'unique keys' => array(
+            'id' => array(
+                'id'
+            )
+        )
+    );
+    /* chapter */
+    $schema['textbook_companion_chapter'] = array(
+        'description' => t('TODO: please describe this table!'),
+        'fields' => array(
+            'id' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'serial',
+                'not null' => TRUE
+            ),
+            'preference_id' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'int',
+                'not null' => TRUE
+            ),
+            'number' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'int',
+                'not null' => TRUE
+            ),
+            'name' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'varchar',
+                'length' => '255',
+                'not null' => TRUE
+            )
+        ),
+        'primary key' => array(
+            'id'
+        )
+    );
+    /* examples */
+    $schema['textbook_companion_example'] = array(
+        'description' => t('TODO: please describe this table!'),
+        'fields' => array(
+            'id' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'serial',
+                'not null' => TRUE
+            ),
+            'chapter_id' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'int',
+                'not null' => TRUE
+            ),
+            'approver_uid' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'int',
+                'not null' => TRUE
+            ),
+            'number' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'varchar',
+                'length' => '10',
+                'not null' => TRUE
+            ),
+            'caption' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'varchar',
+                'length' => '255',
+                'not null' => TRUE
+            ),
+            'approval_date' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'int',
+                'not null' => TRUE
+            ),
+            'approval_status' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'int',
+                'not null' => TRUE
+            ),
+            'timestamp' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'int',
+                'not null' => TRUE
+            )
+        ),
+        'primary key' => array(
+            'id'
+        )
+    );
+    /* example files */
+    $schema['textbook_companion_example_files'] = array(
+        'description' => t('TODO: please describe this table!'),
+        'fields' => array(
+            'id' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'serial',
+                'not null' => TRUE
+            ),
+            'example_id' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'int',
+                'not null' => TRUE
+            ),
+            'filename' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'varchar',
+                'length' => '255',
+                'not null' => TRUE
+            ),
+            'filepath' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'varchar',
+                'length' => '500',
+                'not null' => TRUE
+            ),
+            'filemime' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'varchar',
+                'length' => '255',
+                'not null' => TRUE
+            ),
+            'filesize' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'int',
+                'not null' => TRUE
+            ),
+            'filetype' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'varchar',
+                'length' => '1',
+                'not null' => TRUE
+            ),
+            'caption' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'varchar',
+                'length' => '100',
+                'not null' => TRUE
+            ),
+            'timestamp' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'int',
+                'not null' => TRUE
+            )
+        ),
+        'primary key' => array(
+            'id'
+        )
+    );
+    /* dependency files */
+    $schema['textbook_companion_dependency_files'] = array(
+        'description' => t('TODO: please describe this table!'),
+        'fields' => array(
+            'id' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'serial',
+                'not null' => TRUE
+            ),
+            'preference_id' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'int',
+                'not null' => TRUE
+            ),
+            'filename' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'varchar',
+                'length' => '255',
+                'not null' => TRUE
+            ),
+            'filepath' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'varchar',
+                'length' => '500',
+                'not null' => TRUE
+            ),
+            'filemime' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'varchar',
+                'length' => '255',
+                'not null' => TRUE
+            ),
+            'filesize' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'int',
+                'not null' => TRUE
+            ),
+            'caption' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'varchar',
+                'length' => '100',
+                'not null' => TRUE
+            ),
+            'description' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'text',
+                'size' => 'medium',
+                'not null' => TRUE
+            ),
+            'timestamp' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'int',
+                'not null' => TRUE
+            )
+        ),
+        'primary key' => array(
+            'id'
+        )
+    );
+    /* example - dependency files links */
+    $schema['textbook_companion_example_dependency'] = array(
+        'description' => t('TODO: please describe this table!'),
+        'fields' => array(
+            'id' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'serial',
+                'not null' => TRUE
+            ),
+            'example_id' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'int',
+                'not null' => TRUE
+            ),
+            'dependency_id' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'int',
+                'not null' => TRUE
+            ),
+            'approval_status' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'int',
+                'not null' => TRUE
+            ),
+            'timestamp' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'int',
+                'not null' => TRUE
+            )
+        ),
+        'primary key' => array(
+            'id'
+        )
+    );
+    $schema['textbook_companion_notes'] = array(
+        'description' => t('TODO: please describe this table!'),
+        'fields' => array(
+            'id' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'serial',
+                'not null' => TRUE
+            ),
+            'preference_id' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'int',
+                'not null' => TRUE
+            ),
+            'notes' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'text',
+                'size' => 'medium',
+                'not null' => TRUE
+            )
+        ),
+        'primary key' => array(
+            'id'
+        )
+    );
+    $schema['textbook_companion_feedback'] = array(
+        'description' => t('TODO: please describe this table!'),
+        'fields' => array(
+            'id' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'serial',
+                'not null' => TRUE
+            ),
+            'example_id' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'int',
+                'not null' => TRUE
+            ),
+            'uid' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'int',
+                'not null' => TRUE
+            ),
+            'feedback' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'text',
+                'size' => 'medium',
+                'not null' => TRUE
+            ),
+            'ip_address' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'varchar',
+                'length' => '16',
+                'not null' => TRUE
+            ),
+            'timestamp' => array(
+                'description' => t('TODO: please describe this field!'),
+                'type' => 'int',
+                'not null' => TRUE
+            )
+        ),
+        'primary key' => array(
+            'id'
+        )
+    );
+    return $schema;
+  }