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When two transactions are being processed against the database at the same time they are termed concurrent transactions.

  • A.True
  • B.
    False

Answer: A

Correct answer: True

Transactions are concurrent when their execution overlaps in time, whether or not they touch the same data. The whole apparatus of locking and isolation levels exists to make concurrent transactions behave as though they had run one after another, which is what serializability means.

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