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Question 5. (20pts) (Briefly justify your answer) 1) Consider three transactions: T1, T2 and T3. Draw the precedence graph for the following schedule consisting of these three transactions and determine whether it is conflict serializable a) (5points) S: R1(X); R3(Z); W2(X); RI(Z); R3(Y); W2(Y), R3(Z), W1(Z), b) (5points) S: RI(X); R3(Z); W20x); RI(Y); R2(Y); W3(Y); R3(Z); WI(Z);
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