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The protocol that indicates when a transaction may lock and unlock each of the data items is called as __________

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The protocol that indicates when a transaction may lock and unlock each of the data items is called as __________

(a) Locking protocol

(b) Unlocking protocol

(c) Granting protocol

(d) Conflict protocol

The question was posed to me in an interview for job.

I'm obligated to ask this question of Lock Based Protocols in chapter Concurrency Control of RDBMS

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Right choice is (a) Locking protocol

To explain: The protocol that indicates when a transaction may lock and unlock each of the data items is called as locking protocol. Locking protocols restrict the number of schedules.

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