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      Question

      Which deadlock prevention scheme allows older

      transactions to preempt younger ones?
      A Wait-Die Correct Answer Incorrect Answer
      B Wound-Wait Correct Answer Incorrect Answer
      C Timeout Correct Answer Incorrect Answer
      D Resource ordering Correct Answer Incorrect Answer
      E Deadlock detection Correct Answer Incorrect Answer

      Solution

      In Wound-Wait, older transactions wound (force rollback of) younger ones. Wait-Die is the reverse.

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