'Keeps track of what releases of local sub-projects are included in a release of a given package project.', 'fields' => array( 'package_nid' => array( 'description' => 'Primary Key: The {node}.nid of the package release node.', 'type' => 'int', 'unsigned' => TRUE, 'not null' => TRUE, 'default' => 0, ), 'item_nid' => array( 'description' => 'The {node}.nid of a local release node (from the same site) included as an item in the package.', 'type' => 'int', 'unsigned' => TRUE, 'not null' => TRUE, 'default' => 0, ), ), 'primary key' => array('package_nid', 'item_nid'), ); return $schema; }