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

Related MCQs

•                          using a log record sets the data item specified in the log record to the old value.
• In a                clustering index, the index record contains the search-key value and a pointer to the first data record with that search-key value and the rest of the records will be in the sequential pointers.
• In a _______ clustering index, the index record contains the search-key value and a pointer to the first data record with that search-key value and the rest of the records will be in the sequential pointers.
• Writing the buffered log to                      is sometimes referred to as a log force.
• A transaction commits as soon as its commit log record is written to stable storage at the primary site. This is
• A transaction commits as soon as its commit log record is written to stable storage at the primary and the backup site. This is
• If only the primary is active, the transaction is allowed to commit as soon as its commit log record is written to stable storage at the primary site. This is
• Which of the following is used to get back all the transactions back after rollback?
•                      rollback requires the system to maintain additional information about the state of all the running transactions.
• Rollback of transactions is normally used to: