它可以被定義為數據庫管理系統(DBMS)用來處理不同的SQL操作(如創建、讀取、更新和刪除數據庫中的數據)的軟件組件。換句話說,它被DBMS用來管理數據庫中的信息。最常用的存儲引擎是InnoDB,它也是MySQL5.5及更高版本的默認存儲引擎。在MySQL5.5之前,默認的存儲引擎是MyISAM。
通過使用SHOW ENGINES命令,我們可以檢查MySQL安裝支持的存儲引擎列表?
mysql> SHOW ENGINES\G
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*************************** 1. row *************************** Engine: FEDERATED Support: NO Comment: Federated MySQL storage engine Transactions: NULL XA: NULL Savepoints: NULL *************************** 2. row *************************** Engine: MRG_MYISAM Support: YES Comment: Collection of identical MyISAM tables Transactions: NO XA: NO Savepoints: NO *************************** 3. row *************************** Engine: MyISAM Support: YES Comment: MyISAM storage engine Transactions: NO XA: NO Savepoints: NO *************************** 4. row *************************** Engine: BLACKHOLE Support: YES Comment: /dev/null storage engine (anything you write to it disappear Transactions: NO XA: NO Savepoints: NO *************************** 5. row *************************** Engine: CSV Support: YES Comment: CSV storage engine Transactions: NO XA: NO Savepoints: NO *************************** 6. row *************************** Engine: MEMORY Support: YES Comment: Hash based, stored in memory, useful for temporary tables Transactions: NO XA: NO Savepoints: NO *************************** 7. row *************************** Engine: ARCHIVE Support: YES Comment: Archive storage engine Transactions: NO XA: NO Savepoints: NO *************************** 8. row *************************** Engine: InnoDB Support: DEFAULT Comment: Supports transactions, row-level locking, and foreign keys Transactions: YES XA: YES Savepoints: YES *************************** 9. row *************************** Engine: PERFORMANCE_SCHEMA Support: YES Comment: Performance Schema Transactions: NO XA: NO Savepoints: NO 9 rows in set (0.00 sec)
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