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

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Which 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

The question was posed to me during an interview.

The origin of the question is Copying Databases to Another Server topic in chapter Database Maintenance, Backups and Replication of MySQL

1 Answer

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Best answer
Right answer 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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