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The myisamchk variable that represents the size of buffer used to hold index blocks is _____________

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The myisamchk variable that represents the size of buffer used to hold index blocks is _____________

(a) key_buffer_size

(b) read_buffer_size

(c) sort_buffer_size

(d) write_buffer_size

The question was posed to me during an online exam.

My query is from Using Backups for Data Recovery in division Database Maintenance, Backups and Replication of MySQL

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Correct option is (a) key_buffer_size

Easiest explanation: The myisamchk variable ‘key_buffer_size’ stores the size of buffer that is used to hold index blocks. ‘read_buffer_size’ stores size of buffer used for read operations, ‘sort_buffer_size’ is used for sorting.

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