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      Question

      Which concurrency control technique allows multiple

      transactions to access the database simultaneously?
      A Two-phase locking (2PL) Correct Answer Incorrect Answer
      B Timestamp ordering Correct Answer Incorrect Answer
      C Optimistic concurrency control Correct Answer Incorrect Answer
      D Strict two-phase locking (Strict 2PL) Correct Answer Incorrect Answer

      Solution

      Optimistic concurrency control

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