This is a comparison between notable database engines for the MySQL database management system (DBMS). A database engine (or "storage engine") is the underlying software component that a DBMS uses to create, read, update and delete (CRUD) data from a database.
| Name | Vendor | License | Transactional | Under active development | MySQL versions | MariaDB versions |
|---|---|---|---|---|---|---|
| Archive | Oracle | GPL | No | Yes | 5.0 - present | 5.1 - present |
| Aria | MariaDB | GPL | No | Yes | None | 5.1 - present |
| Berkeley DB | Oracle | AGPLv3 | Yes | No | ? - 5.0 | None |
| BLACKHOLE | Oracle | GPL | No | Yes | 5.0 - present | 5.1 - present |
| CONNECT | MariaDB | GPL | No | Yes | None | 10.0 - present |
| CSV | Oracle | GPL | No | Yes | 5.0 - present | 5.1 - present |
| Falcon | Oracle | GPL | Yes | No | ? | None |
| Federated | Oracle | GPL | ? | No | 5.0 - present | ? |
| FederatedX | MariaDB | GPL | Yes | No | None | ? - present |
| ColumnStore (formerly InfiniDB) | Calpont | GPL | Yes | Yes | None | 10.5.4 - present |
| InnoDB | Oracle | GPL | Yes | Yes | 3.23 - present | 5.1 - present |
| MEMORY | Oracle | GPL | No | Yes | 3.23 - present | 5.1 - present |
| Mroonga | Groonga Project | GPL | No | Yes | None | 10.0 - present |
| MyISAM | Oracle | GPL | No | No | 3.23 - present | 5.1 - present |
| MyRocks | GPLv2 | Yes | Yes | None | 10.2 - present | |
| NDB | Oracle | GPLv2 | Yes | Yes | ? | None |
| OQGRAPH | Oracle | GPLv2 | No | No | None | 5.2 - present |
| S3 | MariaDB | GPL | No | Yes | None | 10.5 - present |
| SEQUENCE | MariaDB | GPL | No | Yes | None | 10.0 - present |
| Sphinx | Sphinx Technologies Inc. | GPL | No | No | None | 5.2 - present |
| SPIDER | Kentoku Shiba | GPL | Yes | Yes | None | 10.0 - present |
| TempTable | Oracle | GPL | No | Yes | 8.0 - present | None |
| TokuDB | Percona | Modified GPL | Yes | No | None | 5.5 - present |
| XtraDB | Percona | GPL | Yes | Yes | None | 5.1 - 10.1 |
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