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A transaction log shows before and after images of records that have been modified by transactions.

  • A.True
  • B.False

Answer: B

Correct answer: False

Before and after images belong to the database change log. The transaction log records the essential details of each transaction - its identifier, the time, the terminal, the input values - without the images of the records themselves. The two logs serve recovery together, but the statement has attributed the content of one to the other.

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