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https://github.com/edgedb/edgedb

A graph-relational database with declarative schema, built-in migration system, and a next-generation query language
https://github.com/edgedb/edgedb

database edgedb edgeql graph-relational graphql high-performance object-relational rdbms relational-database

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A graph-relational database with declarative schema, built-in migration system, and a next-generation query language

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EdgeDB


  

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What is EdgeDB?


  


    EdgeDB is a new kind of database

    


    that takes the best parts of

    


    relational databases, graph

    


    databases, and ORMs. We call it

    
a graph-relational database.

  














  
🧩 Types, not tables 🧩








Schema is the foundation of your application. It should be something you can

read, write, and understand.



Forget foreign keys; tabular data modeling is a relic of an older age, and it

[isn't compatible](https://en.wikipedia.org/wiki/Object%E2%80%93relational_impedance_mismatch)

with modern languages. Instead, EdgeDB thinks about schema the same way you do:

as **object types** containing **properties** connected by **links**.



```elm

type Person {

  required name: str;

}



type Movie {

  required title: str;

  multi actors: Person;

}

```



This example is intentionally simple, but EdgeDB supports everything you'd

expect from your database: a strict type system, indexes, constraints, computed

properties, stored procedures...the list goes on. Plus it gives you some shiny

new features too: link properties, schema mixins, and best-in-class JSON

support. Read the [schema docs](https://www.edgedb.com/docs/datamodel/index)

for details.








  
🌳 Objects, not rows 🌳








EdgeDB's super-powered query language EdgeQL is designed as a ground-up

redesign of SQL. EdgeQL queries produce rich, structured objects, not flat

lists of rows. Deeply fetching related objects is painless...bye, bye, JOINs.



```elm

select Movie {

  title,

  actors: {

    name

  }

}

filter .title = "The Matrix"

```



EdgeQL queries are also _composable_; you can use one EdgeQL query as an

expression inside another. This property makes things like _subqueries_ and

_nested mutations_ a breeze.



```elm

insert Movie {

  title := "The Matrix Resurrections",

  actors := (

    select Person

    filter .name in {

      'Keanu Reeves',

      'Carrie-Anne Moss',

      'Laurence Fishburne'

    }

  )

}

```



There's a lot more to EdgeQL: a comprehensive standard library, computed

properties, polymorphic queries, `with` blocks, transactions, and much more.

Read the [EdgeQL docs](https://www.edgedb.com/docs/edgeql/index) for the full

picture.








  
🦋 More than a mapper 🦋








While EdgeDB solves the same problems as ORM libraries, it's so much more. It's

a full-fledged database with a

[powerful and elegant query language](https://www.edgedb.com/docs/edgeql/index), a

[migrations system](https://www.edgedb.com/docs/guides/migrations/index), a

[suite of client libraries](https://www.edgedb.com/docs/clients/index) in

different languages, a

[command line tool](https://www.edgedb.com/docs/cli/index), and—coming soon—a

cloud hosting platform. The goal is to rethink every aspect of how developers

model, migrate, manage, and query their database.



Here's a taste-test of EdgeDB's next-level developer experience: you can

install our CLI, spin up an instance, and open an interactive EdgeQL shell with

just three commands.



```

$ curl --proto '=https' --tlsv1.2 -sSf https://sh.edgedb.com | sh

$ edgedb project init

$ edgedb

edgedb> select "Hello world!"

```



Windows users: use this Powershell command to install the CLI.



```

PS> iwr https://ps1.edgedb.com -useb | iex

```







## Get started



To start learning about EdgeDB, check out the following resources:



- **[The quickstart](https://www.edgedb.com/docs/guides/quickstart)**. If

  you're just starting out, the 10-minute quickstart guide is the fastest way

  to get up and running.

- **[EdgeDB Cloud 🌤️](https://www.edgedb.com/cloud)**. The best

  most effortless way to host your EdgeDB database in the cloud.

- **[The interactive tutorial](https://www.edgedb.com/tutorial)**. For a

  structured deep-dive into the EdgeQL query language, try the web-based

  tutorial— no need to install anything.

- **[The e-book](https://www.edgedb.com/easy-edgedb)**. For the most

  comprehensive walkthrough of EdgeDB concepts, check out our illustrated

  e-book [Easy EdgeDB](https://www.edgedb.com/easy-edgedb). It's designed to

  walk a total beginner through EdgeDB in its entirety, from the basics through

  advanced concepts.

- **The docs.** Jump straight into the docs for

  [schema modeling](https://www.edgedb.com/docs/datamodel/index) or

  [EdgeQL](https://www.edgedb.com/docs/edgeql/index)!







## Contributing



PRs are always welcome! To get started, follow

[this guide](https://www.edgedb.com/docs/internals/dev) to build EdgeDB from

source on your local machine.



[File an issue 👉](https://github.com/edgedb/edgedb/issues/new/choose)




[Start a Discussion 👉](https://github.com/edgedb/edgedb/discussions/new)




[Join the discord 👉](https://discord.gg/umUueND6ag)







## License



The code in this repository is developed and distributed under the

Apache 2.0 license. See [LICENSE](LICENSE) for details.