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    Question

    Which of the following is not a commonly used

    lock-based concurrency control protocol in a DBMS?
    A Two-Phase Locking (2PL) Correct Answer Incorrect Answer
    B Strict Two-Phase Locking Correct Answer Incorrect Answer
    C Optimistic Concurrency Control (OCC) Correct Answer Incorrect Answer
    D Timestamp-based Concurrency Control Correct Answer Incorrect Answer

    Solution

    Strict Two-Phase Locking

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