Is the following schedule conflict serializable? Justify your answer:
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No, the schedule is not conflict serializable. Explanation: The schedule cannot be conflict serialized because it has a write-write conflict between transactions T1 and T2, which prevents it from being conflict serialized. The value of X is increased from ten to twenty in the schedule by T1, which also raises the value of X from five to fifteen by T2. If these two transactions were to run at the same time, the resultant value of X would be unknown. Conflict serializability is a characteristic of schedules that ensures the order in which transactions are executed does not have an effect on the outcome of the schedule. This property prevents schedules from being unpredictable. It is necessary to resolve any and all write-write conflicts before a schedule can be considered conflict serializable. The write-write conflict that occurred in the schedule shown above has not been resolved, and as a result, the schedule cannot be conflict serialized. The schedule conflict can be made serializable in a number of ways, one of which is to compel T2 to wait until T1 has completed its execution. This would ensure that T2 does not try to write to X until after T1 has done writing, and hence, the final value of X would be defined. Additionally, this would prevent T2 from trying to write to X until after T1 has finished writing. Allowing T1 and T2 to run in parallel while simultaneously instructing T2 to write its value to a location that is distinct from X is an additional strategy for resolving the schedule conflict in a serializable manner. Because of this, it would be guaranteed that the two transactions do not interfere with one another, and as a result, the schedule would be conflict serializable. Any schedule that has a write-write conflict is not conflict serializable as a general rule because of the nature of the conflict. In order to make this kind of scheduling conflict serializable, the write-write conflict needs to be addressed in one of two ways: either one of the conflicting transactions needs to be made to wait, or the conflicting transactions need to be made to write to different locations. ...