Question: (a) Explain what is meant by the constrained write rule, and explain how to test whether a schedule is serializable under the constrained write rule.

(a) Explain what is meant by the constrained write rule, and explain how to test whether a schedule is serializable under the constrained write rule. Using the above method, determine whether the following schedule is serializable:
(b) Would it be sensible to produce a concurrency control algorithm based on serializability? Give justification for your answer. How is serializability used in standard concurrency control algorithms?

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