Which of the following is used for undo operations alone?

Related MCQs

• If                        are not obtained in undo operation it will cause problem in undo- phase.
• In order to undo the work of transaction after last commit which one should be used?
•                        determines which transactions to undo, which pages were dirty at the time of the crash, and the LSN from which the redo pass should start.
• Which TCL command undo all the updates performed by the SQL in the transaction?
•              will undo all statements up to commit?
• For correct behaviour during recovery, undo and redo operation must be
• The results of each intermediate operation are created and then are used for evaluation of the next-level operations. This is called
• Designers use which of the following to tune the performance of systems to support time-critical operations?
• Designers use which of the following to tune the performance of systems to support timecritical operations?
• Which of the following constitutes a basic set of operations for manipulating relational data?