Database Management Subject

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Fourth Question: Grade A) Check for view equivalent between S1 and 52. S1: R2(A) W2(A) R3(C) W2(B) W3(A) R1(A) R1(B) W1(A) W1(B) S2: R3(C) R2(A) W2(A) W2(B) W3(A) R1(A) R1(B) W1(A) W1(B) B) Check the Conflict serializableusing the precedence graph? With sequence R2(A); W2(A), R3(C); W2(B); W3(A); W3(C): R1(A), R1(B); W1(A), W1(B) I C) S: R1(A): R2(B): W1(C): R3(B): R3(C) W3(C); W2B): R3(B), W3(A) Based on time stamp protocol, the following instructions should be executed or rejected? a) (T1 T2 T3) = (10,20,30) R3(C). Reject/Executed? Why? W2(B) : Reject/Executed? Why? What is the TS-W(C)