Which of the following is not a recovery technique?

Q. Which of the following is not a recovery technique?

1. Deferred update
2. Immediate update
3. Two-phase commit
4. Shadow paging

Answer: Two-phase commit

Two-phase commit is not a recovery technique

Data recovery is the process of restoring data that has been lost, accidentally deleted, corrupted or made inaccessible. In enterprise IT, data recovery typically refers to the restoration of data to a desktop, laptop, server or external storage system from a backup.

Recovery Techniques

1. Undoing
2. Deferred update
3. Immediate update
4. Caching/Buffering
5. Shadow paging