# Postgres Postgres is an open source, object-relational database system that provides reliability, data integrity, and correctness. omniload supports Postgres as both a source and destination. ## URI format The URI format for Postgres is as follows: ```text postgresql://:@:/?sslmode= ``` URI parameters: - `username`: the user name to connect to the database - `password`: the password for the user - `host`: the host address of the database server - `port`: the port number the database server is listening on, the default is 5432 - `database-name`: the name of the database to connect to - `sslmode`: optional, the SSL mode to use when connecting to the database The same URI structure can be used both for sources and destinations. You can read more about SQLAlchemy's Postgres dialect [here](https://docs.sqlalchemy.org/en/14/dialects/postgresql.html).