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Question

Which of the following concurrency control protocols ensure both conflict serializability and freedom from deadlock ?

I) 2-phase locking
II) Time-stamp ordering

a.

I only

b.

II only

c.

Both I and II

d.

Neither I nor II

Answer: (b).II only

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Q. Which of the following concurrency control protocols ensure both conflict serializability and freedom from deadlock ? I) 2-phase locking II) Time-stamp ordering

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