PostgreSQL

The Node.js ecosystem provides a set of tools for interfacing with databases. One of those tools is _node-postgres_, which contains modules that allow Node.js to interface with the PostgreSQL database. In this tutorial, you’ll use `node-postgres` to connect and query the PostgreSQL database. You will then connect your application to the Postgres database using the `node-postgres` module. Afterwards, you will use `node-postgres` to insert, retrieve, and modify data in the PostgreSQL database.