Show by example that there are schedules possible under the tree protocol that is not possible under the two-phase locking protocol, and vice versa.
Answer to relevant QuestionsConsider the following extension to the tree-locking protocol, which allows both shared and exclusive locks:• A transaction can be either a read-only transaction, in which case it can request only shared locks, or an ...In timestamp ordering, W-timestamp (Q) denotes the largest timestamp of any transaction that executed write (Q) successfully. Suppose that, instead, we defined it to be the timestamp of the most recent transaction to execute ...For each of the following protocols, describe aspects of practical applications that would lead you to suggest using the protocol, and aspects that would suggest not using the protocol:• Two-phase locking• Two-phase ...Stable storage cannot be implemented.a. Explain why it cannot be.b. Explain how database systems deal with this problem.Explain the reasons why recovery of interactive transactions is more difficult to deal with than is recovery of batch transactions. Is there a simple way to deal with this difficulty?
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