Let Ri (z) and Wi (z) denote read and write operations on a data element z by…
GATE · 2022 · CS · Computer Science & IT
Let Ri (z) and Wi (z) denote read and write operations on a data element z by a transaction Ti , respectively. Consider the schedule S with four transactions.
S : R4(x), R2(x), R3(x), R1(y), W1(y), W2(x), W3(y), R4(y)
Which one of the following serial schedules is conflict equivalent to S?
- A.
T1 → T3 → T4 → T2
- B.
T1 → T4 → T3 → T2
- C.
T4 → T1 → T3 → T2
- D.
T3 → T1 → T4 → T2
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