1alter table `tiki_object_attributes` modify `itemId` varchar(160) NOT NULL; 2alter table `tiki_object_attributes` modify `attribute` varchar(70) NOT NULL; 3alter table `tiki_object_attributes` modify `value` varchar(255); 4alter table `tiki_object_relations` modify `relation` varchar(70) NOT NULL; 5alter table `tiki_object_relations` modify `target_itemId` varchar(160) NOT NULL; 6alter table `tiki_object_relations` modify `source_itemId` varchar(160) NOT NULL;