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What is the log in which data changes received from a replication master server are written?

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What is the log in which data changes received from a replication master server are written?

(a) error log

(b) general query log

(c) binary log

(d) relay log

This question was posed to me in an interview.

Origin of the question is Using Backups for Data Recovery topic in chapter Database Maintenance, Backups and Replication of MySQL

1 Answer

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Best answer
Correct choice is (d) relay log

Explanation: The Relay Log has the data changes received from a replication master server written in it. The problems encountered during the starting, running or stopping of ‘mysqld’ is written in error log.

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