Inquiry about how to disable costing flag at item master by batch

We need to disable costing flag, assets flag and inventory item flags at item master for a bunch of items. As the number of the items to be updated is quite large, we are going to update the inv.mtl_system_items_b table from back-end. If we update costing flag with N, we also need to delete all the costing history from tables. May I know whether there is a better way to disable costing flag at item master than manually updating the flag from back-end? If we have to update the back-end table, how many tables would be involved to delete related