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Developer(s)Oracle Corporation
Written inC
Operating systemCross-platform
TypeDatabase engine
LicenseGNU GPL v2 or proprietary Edit this on Wikidata

InnoDB is a storage engine for the database management system MySQL and MariaDB.[1] Since the release of MySQL 5.5.5 in 2010, it replaced MyISAM as MySQL's default table type.[2][3] It provides the standard ACID-compliant transaction features, along with foreign key support (Declarative Referential Integrity). It is included as standard in most binaries distributed by MySQL AB, the exception being some OEM versions.


InnoDB internal architecture.

InnoDB became a product of Oracle Corporation after its acquisition of the Finland-based company Innobase in October 2005.[4] The software is dual licensed; it is distributed under the GNU General Public License, but can also be licensed to parties wishing to combine InnoDB in proprietary software.[5]

InnoDB supports:

See also[edit]


  1. ^ "InnoDB".
  2. ^ "Introduction to InnoDB". MySQL 5.5 Reference Manual. Retrieved 2 October 2019.
  3. ^ "Changes in MySQL 5.5.5". MySQL 5.5 Reference Manual. Retrieved 2 October 2019.
  4. ^ "Oracle Announces the Acquisition of Open Source Software Company, Innobase". Oracle Corporation. 7 October 2005. Retrieved 28 March 2017.
  5. ^ "Licensing MySQL and InnoDB". Retrieved 31 July 2008.
  6. ^ "Oracle Announces General Availability of MySQL 5.6". Archived from the original on 8 February 2013.
  7. ^ "MariaDB 10.0.0 Release Notes".
  8. ^ "Generated (Virtual and Persistent/Stored) Columns". MariaDB KnowledgeBase. Retrieved 22 December 2019.

External links[edit]