Contents
- 1 What is Binlog format in MySQL?
- 2 What is statement based replication?
- 3 Which command will enable a user to output a binary log file in a human readable format?
- 4 When does binlog direct non transactional update work?
- 5 What is the default value of binlog _ checksum?
- 6 Which is better statement based or row based logging?
What is Binlog format in MySQL?
You can select the binary logging format explicitly by starting the MySQL server with –binlog-format= type . The supported values for type are: STATEMENT causes logging to be statement based. ROW causes logging to be row based. MIXED causes logging to use mixed format.
What is statement based replication?
Statement-based replication Under this method, the binary log stores the SQL statements used to change databases on the master server. The slave reads this data and reexecutes these SQL statements to produce a copy of the master database. This is the default replication method in MySQL 5.1.
Which command will enable a user to output a binary log file in a human readable format?
mysqlbinlog command is used to view the content of the binary log in a readable user friendly format. You’ll also use the mysqlbinlog command to read the content and pipe it to other mysql utilities.
What is statement based?
To replicate a DML statement (such as an UPDATE or DELETE statement), statement-based replication writes only the statement to the binary log. By contrast, row-based replication writes each changed row to the binary log.
What’s the difference between statement based replication and row based replication?
Statement-Based Replication (SBR) will replicate SQL Statements. It is easier to read using mysqlbinlog dump program. Row based replication (RBR) will replicate actual data changes.
When does binlog direct non transactional update work?
binlog_direct_non_transactional_updates works only for statements that are replicated using the statement-based binary logging format; that is, it works only when the value of binlog_format is STATEMENT, or when binlog_format is MIXED and a given statement is being replicated using the statement-based format.
What is the default value of binlog _ checksum?
When enabled, this variable causes the source to write a checksum for each event in the binary log. binlog_checksum supports the values NONE (disabled) and CRC32. The default is CRC32. You cannot change the value of binlog_checksum within a transaction.
Which is better statement based or row based logging?
In MySQL 5.5, statement-based format is the default. But it is better to use the mixed format. Because in that case, statement-based logging is used by default, but automatically switches to row-based logging in cases where-ever required. Thanks for contributing an answer to Database Administrators Stack Exchange!