How to Install PostgreSQL 15 on Rocky Linux 9

PostgreSQL is a free and open-source database management system focusing on extensibility and SQL compliance. This tutorial will guide you through installing the latest PostgreSQL 15 on a Rocky Linux 9 server. This also guides you through the basic usage of PostgreSQL for creating users/roles, managing databases, creating tables, insert and retrieving data.

Source: Howtoforge Linux Howtos und Tutorials