# upper/db `upper/db` is a productive data access layer (DAL) for [Go](https://golang.org) that provides agnostic tools to work with different data sources, such as: * [PostgreSQL](https://upper.io/v4/adapter/postgresql) * [MySQL](https://upper.io/v4/adapter/mysql) * [MSSQL](https://upper.io/v4/adapter/mssql) * [CockroachDB](https://upper.io/v4/adapter/cockroachdb) * [MongoDB](https://upper.io/v4/adapter/mongo) * [QL](https://upper.io/v4/adapter/ql) * [SQLite](https://upper.io/v4/adapter/sqlite) See [upper.io/v4](//upper.io/v4) for documentation and code samples. ## The tour ![tour](https://user-images.githubusercontent.com/385670/91495824-c6fabb00-e880-11ea-925b-a30b94474610.png) Take the [tour](https://tour.upper.io) to see real live examples in your browser. ## License Licensed under [MIT License](./LICENSE) ## Contributors See the [list of contributors](https://github.com/upper/db/graphs/contributors).