What Is PostgreSQL?
PostgreSQL is an open source object-relational database system that uses and extends the SQL language to store and scale complicated data workloads.
A prerequisite to start with this walkthrough is to have a database connector added in Anypoint Studio. You can add these connectors from the Add modules option. Also, you need to have an ElephantSQL account, as we are going to use the PostgreSQL database hosted on the ElephantSQL platform. You can use any other PostgreSQL service provider platform or self-managed PostgreSQL server.