Redo operations are performed exclusively using

Related MCQs

• 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
•                        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.
•                      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.
• For correct behaviour during recovery, undo and redo operation must be
• If an transaction is performed in a database and committed, the changes are taken to the previous state of transaction by
•                          allows individual row operation to be performed on a given result set or on the generated by a selected by a selected statement.
• Which of the following command makes the updates performed by the transaction permanent in the database?
• Which TCL command undo all the updates performed by the SQL in the transaction?
• Primitive operations common to all record management system include
• The                    provides a set of operations that take one or more relations as input and return a relation as an output.