MySQL 5.1 Reference Manual  /  ...  /  INFORMATION_SCHEMA Plugins INFORMATION_SCHEMA Plugins

INFORMATION_SCHEMA plugins enable the creation of tables containing server metadata that are exposed to users through the INFORMATION_SCHEMA database. For example, InnoDB uses INFORMATION_SCHEMA plugins to provide tables that contain information about current transactions and locks.

For more information about INFORMATION_SCHEMA plugins, see Section, “Writing INFORMATION_SCHEMA Plugins”.

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