Transactions

Question 50

Consider the following schedules involving two transactions.

S1: r1(X) ; r1(Y) ; r2(X) ; r2(Y) ; w2(Y) ; w1(X)
S2: r1(X) ; r2(X) ; r2(Y) ; w2(Y) ; r1(Y) ; w1(X)

Which one of the following statements is correct with respect to above ?

A	Both S1 and S2 are conflict serializable.
B	Both S1 and S2 are not conflict serializable.
C	S1 is conflict serializable and S2 is not conflict serializable.
D	S1 is not conflict serializable and S2 is conflict serializable.

Question 50 Explanation:

Correct Answer: D

Question 50 Explanation:

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