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Sequelize is an easy-to-use and promise-based [Node.js](https://nodejs.org/en/about/) [ORM tool](https://en.wikipedia.org/wiki/Object-relational_mapping) for [Postgres](https://en.wikipedia.org/wiki/PostgreSQL), [MySQL](https://en.wikipedia.org/wiki/MySQL), [MariaDB](https://en.wikipedia.org/wiki/MariaDB), [SQLite](https://en.wikipedia.org/wiki/SQLite), [DB2](https://en.wikipedia.org/wiki/IBM_Db2_Family), [Microsoft SQL Server](https://en.wikipedia.org/wiki/Microsoft_SQL_Server), and [Snowflake](https://www.snowflake.com/). It features solid transaction support, relations, eager and lazy loading, read replication and more.
Would you like to contribute? Read [our contribution guidelines](https://github.com/sequelize/sequelize/blob/main/CONTRIBUTING.md) to know more. There are many ways to help! 😃
## :computer: Getting Started
Ready to start using Sequelize? Head to [sequelize.org](https://sequelize.org) to begin!
- [Our Getting Started guide for Sequelize 6 (stable)](https://sequelize.org/docs/v6/getting-started)
## :money_with_wings: Supporting the project
Do you like Sequelize and would like to give back to the engineering team behind it?
We have recently created an [OpenCollective based money pool](https://opencollective.com/sequelize) which is shared amongst all core maintainers based on their contributions. Every support is wholeheartedly welcome. ❤️
## :pencil: Major version changelog
Please find upgrade information to major versions here:
- [Upgrade from v5 to v6](https://sequelize.org/docs/v6/other-topics/upgrade-to-v6)
## :book: Resources
- [Documentation](https://sequelize.org)
- [Databases Compatibility Table](https://sequelize.org/releases/)
- [Changelog](https://github.com/sequelize/sequelize/releases)
- [Discussions](https://github.com/sequelize/sequelize/discussions)
- [Slack](https://sequelize.org/slack)
- [Stack Overflow](https://stackoverflow.com/questions/tagged/sequelize.js)
### :wrench: Tools
- [CLI](https://github.com/sequelize/cli)
- [With TypeScript](https://sequelize.org/docs/v6/other-topics/typescript)
- [Enhanced TypeScript with decorators](https://github.com/RobinBuschmann/sequelize-typescript)
- [For GraphQL](https://github.com/mickhansen/graphql-sequelize)
- [For CockroachDB](https://github.com/cockroachdb/sequelize-cockroachdb)
- [Awesome Sequelize](https://sequelize.org/docs/v6/other-topics/resources/)
- [For YugabyteDB](https://github.com/yugabyte/sequelize-yugabytedb)
### :speech_balloon: Translations
- [English](https://sequelize.org) (Official)
- [中文文档](https://github.com/demopark/sequelize-docs-Zh-CN) (Unofficial)
## :warning: Responsible disclosure
If you have security issues to report, please refer to our
[Responsible Disclosure Policy](https://github.com/sequelize/sequelize/blob/main/SECURITY.md) for more details.