starts from a position determined during analysis, and performs a redo, repeating history, to bring the database to a state it was in before the crash.

Related MCQs

•                        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.
• Database __________ which is the logical design of the database, and the database _______ which is a snapshot of the data in the database at a given instant in time.
• Database __________ , which is the logical design of the database, and the database _______,which is a snapshot of the data in the database at a given instant in time.
• For correct behaviour during recovery, undo and redo operation must be
• A special redo-only log record < Ti, Xj, V1> is written to the log, where V1 is the value being restored to data item Xj during the rollback. These log records are sometimes called
• If the state of the database no longer reflects a real state of the world that the database is supposed to capture, then such a state is called
• If the state of the database no longer reflects a real state of the world that the database is supposed to capture, then such a state is called
• If the state of the database no longer reflects a real state of the world that the database is supposed to capture, then such a state is called
• Redo operations are performed exclusively using
• If several concurrent transactions are executed over the same data set and the second transaction updates the database before the first transaction is finished, the ____ property is violated and the database is no longer consistent.