Lo Storage Engine PERFORMANCE_SCHEMA
Se si esegue SHOW ENGINES su una versione di MariaDB che supporta il Performance Schema, si noterà nell'elenco il seguente Storage Engine.
SHOW ENGINES; +--------------------+---------+----------------------------------+--------------+------+------------+ | Engine | Support | Comment | Transactions | XA | Savepoints | +--------------------+---------+----------------------------------+--------------+------+------------+ | ... | | | | | | | PERFORMANCE_SCHEMA | YES | Performance Schema | NO | NO | NO | | ... | | | | | | +--------------------+---------+----------------------------------+--------------+------+------------+
Tuttavia PERFORMANCE_SCHEMA non è un normale Storage Engine per registrare i dati, ma è un meccanismo per implementare la funzionalità Performance Schema.
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