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    Question

    Shadow paging in recovery eliminates the need

    for:
    A Write-ahead logging Correct Answer Incorrect Answer
    B Checkpoints Correct Answer Incorrect Answer
    C Lock escalation Correct Answer Incorrect Answer
    D Deadlock detection Correct Answer Incorrect Answer
    E Disk mirroring Correct Answer Incorrect Answer

    Solution

    Shadow paging uses page mapping, so no WAL log is required. Pages are updated by switching references.

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