Test 1 - Databases | Computer Science(CS)

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Multiple Choice

Consider three data items D1, D2 and D3, and the following execution schedule of transactions T1, T2 and T3. In the diagram, R(D) and W(D) denote the actions reading and writing in the data item D respectively.

Which of the following statements is correct?

  1. The schedule is serialisable as T2; T3; T1.
  2. The schedule is serialisable as T2; T1; T3.
  3. The schedule is serialisable as T3; T2; T1.
  4. The schedule is not serialisable.
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