Index: ProtoTable.pm
===================================================================
--- ProtoTable.pm	(revision 486)
+++ ProtoTable.pm	(revision 487)
@@ -29,6 +29,10 @@
 	return 0;
 }
 
+sub db_id_sequence {
+	return 'documents_id_seq';
+}
+
 sub available_filters {
 	return ();
 }