September 2014
Intermediate to advanced
384 pages
9h 28m
English
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InnoDB data structures
In MariaDB, by default, InnoDB is mapped to XtraDB, a compatible InnoDB fork maintained by Percona.
InnoDB tables are contained in tablespaces. A tablespace is a file that contains data and indexes for one or more tables. In old MariaDB and MySQL versions, all the tables are created in a system tablespace. If the innodb_file_per_table system variable is set to 1, which is the default since the 10.0 Version, each table is stored in a separate tablespace. This variable is dynamic, so it is possible to store some tables in separate files, and others in the system tablespace.
The system tablespace, by default, also contains InnoDB's data dictionary, the undo logs, the change buffer, and the doublewrite buffer. The data dictionary ...
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