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If a transaction can be granted a lock on an item immediately in spite of the presence of another mode, then the two modes are said to be ________

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If a transaction can be granted a lock on an item immediately in spite of the presence of another mode, then the two modes are said to be ________

(a) Concurrent

(b) Equivalent

(c) Compatible

(d) Executable

I had been asked this question in exam.

My doubt stems from Lock Based Protocols topic in section Concurrency Control of RDBMS

1 Answer

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Best answer
The correct choice is (c) Compatible

The best I can explain: If a transaction can be granted a lock on an item immediately in spite of the presence of another mode, then the two modes are said to be compatible.

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