This Refcard aims to serve as a comprehensive quick-reference guide for PostgreSQL, an advanced, enterprise-class, and open-source relational database system. The primary purpose is to help both novice and experienced users understand and utilize the crucial functions of PostgreSQL more efficiently. The guide provides a succinct overview of PostgreSQL’s key features, fundamentals, commands, functions, and other essential elements.
![](https://encirclenews.com/wp-content/uploads/2023/09/core-postgresql.jpg)