This statement is used to save all database changes. It corresponds to the Q-API function QCOMMIT. The transfer data is placed, related to transaction, in the queue as a queue unit.

The function ROLLBACK WORK resets a queue transaction. It corresponds to the Q-API function QROLLBACK.

If a system failure occurs, the data elements of a queue unit, which were not closed with COMMIT WORK, are removed from the database and database locks are reset. This ensures that a queue can never contain incomplete queue units.