Boston University Use of the Conflict Equivalent Serial Schedule Report

Question Description

I’m working on a mysql question and need guidance to help me understand better.

1. For the following schedule show if it is conflict-serializable. If the answer is yes, givea conflict-equivalent serial schedule. Show the dependency graph and all the conflictoperations.

R1(A);W1(A);R2(A);R2(B);W3(B);W2(C);R4(A);R4(B);R4(C);C1;C2;C3;C4

2. For the following schedule, insert the appropriate locks (shared and exclusive) intothe schedule following the 2PL protocol. Also explain what happens as the schedulerexecutes the schedule.

W1(A);R2(B);R3(C);W1(B);W2(C);W3(A);C1;C2;C3

Note that, if a transaction blocks because of an operation, the transaction with the nextoperation in the schedule will continue. If you have a deadlock, you need to chose atransaction to abort, release its locks and then the schedule will continue and thetransaction will start again. When a transaction unblocks, it resumes its operations.Write the actual executed schedule.

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