Multiple choice technology databases

What are the two types of recovery?

  1. Horizontal and Vertical

  2. Forward and Backward

  3. Left and Right

  4. Front and Back
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B Correct answer
Explanation

Database recovery uses two fundamental approaches: forward recovery (also called roll-forward) applies logged changes from a checkpoint to restore the database to a more recent state, while backward recovery (rollback) undoes incomplete or erroneous transactions to return to a consistent state. Together, these mechanisms ensure ACID properties after failures.

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