DBMS Practice Test: Normalization and Transactions
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Multiple Choice
In a particular schedule, transaction T2 reads a value previously written by transaction T1 and transaction T3 reads a value previously written by T2. Which of the following ensures the schedule to be cascade less schedule?
- T1 commits before T2 and T2 commits before T3.
- T1 commits after T2 and T2 commits before write operation of T3.
- T1 commits before T2 and T2 commits before write operation of T3.
- T1 commits at last and T2 and T3 can commit in any order.