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GATE | Gate IT 2008 | Question 61
Consider the following three schedules of transactions T1, T2 and T3. [Notation: In the following NYO represents the action Y (R for read, W for write) performed by transaction N on object O.]
(S1) 2RA 2WA 3RC 2WB 3WA 3WC 1RA 1RB 1WA 1WB (S2) 3RC 2RA 2WA 2WB 3WA 1RA 1RB 1WA 1WB 3WC (S3) 2RA 3RC 3WA 2WA 2WB 3WC 1RA 1RB 1WA 1WBWhich of the following statements is TRUE?
(A)
S1, S2 and S3 are all conflict equivalent to each other
(B)
No two of S1, S2 and S3 are conflict equivalent to each other
(C)
S2 is conflict equivalent to S3, but not to S1
(D)
S1 is conflict equivalent to S2, but not to S3
Answer
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