Sequelize is a promise-based Node.js ORM for Postgres, MySQL, MariaDB, SQLite and Microsoft SQL Server. It features solid transaction support, relations, eager and lazy loading, read replication and more. Sequelize follows Semantic Versioning.

New to Sequelize? Take a look at the Tutorials and Guides. You might also be interested in the API Reference.

v6 release is now available under @latest tag. You can find detailed changelog here.

Note: master branch points to experimental version not suitable for production. All documentation PRs should be opened for v6 branch. All bug-fix / feature PRs should be opened for master branch first, then for their release target branches i.e. v6 or v5.

$ npm i sequelize # This will install v6

# And one of the following:
$ npm i pg pg-hstore # Postgres
$ npm i mysql2
$ npm i mariadb
$ npm i sqlite3
$ npm i tedious # Microsoft SQL Server

• v6 Documentation
• v5/v4/v3 Documentation
• Contributing

If you have security issues to report, please refer to our Responsible Disclosure Policy for more details.

• Changelog
• Slack Inviter
• Stack Overflow

• CLI
• With TypeScript
• Enhanced TypeScript with decorators
• For GraphQL
• For CockroachDB
• Plugins

• English (OFFICIAL)
• 中文文档 (UNOFFICIAL)