diff -r 07239de796bb -r e756a8c72c3d cms/drupal/modules/rdf/rdf.install
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cms/drupal/modules/rdf/rdf.install	Fri Sep 08 12:04:06 2017 +0200
@@ -0,0 +1,49 @@
+<?php
+
+/**
+ * @file
+ * Install, update and uninstall functions for the rdf module.
+ */
+
+/**
+ * Implements hook_schema().
+ */
+function rdf_schema() {
+  $schema['rdf_mapping'] = array(
+    'description' => 'Stores custom RDF mappings for user defined content types or overriden module-defined mappings',
+    'fields' => array(
+      'type' => array(
+        'type' => 'varchar',
+        'length' => 128,
+        'not null' => TRUE,
+        'description' => 'The name of the entity type a mapping applies to (node, user, comment, etc.).',
+      ),
+      'bundle' => array(
+        'type' => 'varchar',
+        'length' => 128,
+        'not null' => TRUE,
+        'description' => 'The name of the bundle a mapping applies to.',
+      ),
+      'mapping' => array(
+        'description' => 'The serialized mapping of the bundle type and fields to RDF terms.',
+        'type' => 'blob',
+        'not null' => FALSE,
+        'size' => 'big',
+        'serialize' => TRUE,
+      ),
+    ),
+    'primary key' => array('type', 'bundle'),
+  );
+
+  return $schema;
+}
+
+/**
+ * Implements hook_install().
+ */
+function rdf_install() {
+  // Collect any RDF mappings that were declared by modules installed before
+  // this one.
+  $modules = module_implements('rdf_mapping');
+  rdf_modules_installed($modules);
+}