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    Question

    In two-phase locking, a transaction releases its

    locks:
    A Anytime after reading Correct Answer Incorrect Answer
    B Only after acquiring all locks and entering shrinking phase Correct Answer Incorrect Answer
    C Immediately after write Correct Answer Incorrect Answer
    D When system is idle Correct Answer Incorrect Answer
    E Randomly Correct Answer Incorrect Answer

    Solution

    Two-phase locking enforces a growing phase (acquire) and shrinking phase (release) for serializability.

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