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If a node is locked in an intention mode, explicit locking is done at a lower level of the tree. This is called

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If a node is locked in an intention mode, explicit locking is done at a lower level of the tree. This is called

(a) Intention lock modes

(b) Explicit lock

(c) Implicit lock

(d) Exclusive lock

The question was asked during an internship interview.

This interesting question is from Multiple Granularity topic in chapter Concurrency Control of Database Management

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Right option is (a) Intention lock modes

For explanation: There is an intention mode associated with shared mode, and there is one with an exclusive mode.

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