M Mr. Dubey • 100.69K Points Coach Q. Once the lower-level lock is released, the operation cannot be undone by using the old values of updated data items, and must instead be undone by executing a compensating operation; such an operation is called (A) logical operation (B) redo operation (C) logical undo operation (D) undo operation Correct Answer - Option(A) Views: 635 Filed under category Database Management System (DBMS) Share
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