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sequelize

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Multi dialect ORM for Node.JS/io.js

github.com/sequelize/sequelize

sequelize/sequelize

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# Sequelize [![Build Status](https://travis-ci.org/sequelize/sequelize.svg?branch=v3)](https://travis-ci.org/sequelize/sequelize) [![Windows Build status](https://ci.appveyor.com/api/projects/status/8xhttm9pxmbmtbwb/branch/v3?svg=true)](https://ci.appveyor.com/project/felixfbecker/sequelize/branch/master) [![codecov](https://codecov.io/gh/sequelize/sequelize/branch/v3/graph/badge.svg)](https://codecov.io/gh/sequelize/sequelize) [![Dependency Status](https://david-dm.org/sequelize/sequelize.svg)](https://david-dm.org/sequelize/sequelize) [![Bountysource](https://www.bountysource.com/badge/team?team_id=955&style=bounties_received)](https://www.bountysource.com/teams/sequelize/issues?utm_source=Sequelize&utm_medium=shield&utm_campaign=bounties_received) [![Slack Status](http://sequelize-slack.herokuapp.com/badge.svg)](http://sequelize-slack.herokuapp.com) Sequelize is a promise-based Node.js/io.js ORM for Postgres, MySQL, MariaDB, SQLite and Microsoft SQL Server. It features solid transaction support, relations, read replication and more. [Documentation](http://sequelize.readthedocs.org/en/latest/) ## Installation `npm install sequelize` From 3.0.0 and up Sequelize will follow SEMVER. 3.0.0 contains important security fixes so we highly recommend that users upgrade. If you still use 1.7 please prefer to [Upgrading to 2.0](https://github.com/sequelize/sequelize/wiki/Upgrading-to-2.0) and the changelog between 2.0 and 3.0. 2.1 also has a breaking change. ## Features - Schema definition - Schema synchronization/dropping - 1:1, 1:M & N:M Associations - Through models - Promises - Hooks/callbacks/lifecycle events - Prefetching/association including - Transactions - Migrations - CLI ([sequelize-cli](https://github.com/sequelize/cli)) ## Resources - [Changelog](https://github.com/sequelize/sequelize/blob/master/changelog.md) - [Getting Started](http://docs.sequelizejs.com/en/latest/docs/getting-started/) - [Documentation](http://docs.sequelizejs.com/en/latest/) - [API Reference](http://docs.sequelizejs.com/en/latest/) - [Collaboration and pull requests](https://github.com/sequelize/sequelize/blob/master/CONTRIBUTING.md) - [Roadmap](https://github.com/sequelize/sequelize/issues/2869) - [Twitter](https://twitter.com/SequelizeJS): @SequelizeJS - [IRC](http://webchat.freenode.net?channels=sequelizejs): sequelizejs on Freenode - [Google Groups](https://groups.google.com/forum/#!forum/sequelize) - [Add-ons & Plugins](https://github.com/sequelize/sequelize/wiki/Add-ons-&-Plugins)