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      Question

      What is the purpose of a lock in concurrency

      control?
      A To prevent multiple transactions from accessing the same data simultaneously Correct Answer Incorrect Answer
      B To allow multiple transactions to access the same data simultaneously Correct Answer Incorrect Answer
      C To ensure the durability of the data Correct Answer Incorrect Answer
      D To synchronize the execution of transactions Correct Answer Incorrect Answer

      Solution

      To prevent multiple transactions from accessing the same data simultaneously

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