PostgreSQL, also known as Postgres, is a powerful open-source object-relational database management system (ORDBMS) known for its robustness, reliability, and extensive feature set. It provides a scalable and flexible architecture that allows you to efficiently manage complex data and handle high volume workloads.

To install PostgreSQL on CentOS 8, follow these steps:

1. Update the system packages using the following command:
   sudo dnf update
2. Install PostgreSQL package by executing:
   sudo dnf install postgresql-server
3. Initialize the database:
   sudo postgresql-setup initdb
4. Start the PostgreSQL service and enable it to start automatically on boot:
   sudo systemctl start postgresql
sudo systemctl enable postgresql

PostgreSQL is now installed on your CentOS 8 system. You can interact with it using the PostgreSQL command-line interface (CLI) called "psql". You can also use various graphical tools or programming languages to connect to PostgreSQL and manage your databases.