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The _______ is that part of main memory available for storage of copies of disk blocks.

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The _______ is that part of main memory available for storage of copies of disk blocks.

(a) Buffer

(b) Catalog

(c) Storage

(d) Secondary storage

The question was asked in an interview.

Asked question is from Database Buffer topic in chapter Storage and File Structures of Database Management

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Correct option is (a) Buffer

The best explanation: There is always a copy kept on disk of every block, but the copy on disk may be a version of the block older than the version in the buffer.

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