PostgreSQL database

PostgreSQL is one of the most advanced open source relational database with a great community around it. Hasura comes with a pre-installed PostgreSQL database which runs as the Postgres microservice on a cluster. An admin user for the database is also configured by default.

The Data microservice provides JSON and GraphQL APIs over the Postgres database. Also, the Data section of the API console provides a UI to interact with the database. Due to these, one hardly ever has to deal with the database directly for most common use cases.