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The frequently used buffer replacement strategy is

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The frequently used buffer replacement strategy is

(a) Most recently used

(b) Least recently used

(c) Longest block

(d) All of the mentioned

I got this question by my school teacher while I was bunking the class.

This question is from Database Buffer topic in section Storage and File Structures of Database Management

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Correct choice is (b) Least recently used

The explanation is: If a block must be replaced, the least recently referenced block is replaced.

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