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Backward recovery is which of the following?

  • A.Where the before-images are applied to the database
  • B.Where the after-images are applied to the database
  • C.Where the after-images and before-images are applied to the database
  • D.Switching to an existing copy of the database

Answer: A

Correct answer: Where the before-images are applied to the database

Backward recovery is rollback: the before-images from the log are written back, undoing the transaction’s changes and returning the database to its earlier state. Forward recovery starts from a backup and applies the after-images to bring it up to date.

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