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If a node is locked in ____________ then explicit locking is being done at a lower level, with exclusive-mode or shared-mode locks.

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If a node is locked in ____________ then explicit locking is being done at a lower level, with exclusive-mode or shared-mode locks.

(a) Intention lock modes

(b) Intention-shared-exclusive mode

(c) Intention-exclusive (IX) mode

(d) Intention-shared (IS) mode

The question was posed to me in exam.

The above asked question is from Multiple Granularity in portion Concurrency Control of Database Management

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Right answer is (c) Intention-exclusive (IX) mode

Easiest explanation - There is an intention mode associated with shared mode, and there is one with an exclusive mode.

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