Introduction

PostgreSQL is an open-source object-relational database system. PostgreSQL exists for Windows, macOS and Linux.

Homepage: https://www.postgresql.org

EnterpriseDB (EDB) is the company that is one of the largest contributor to PostgreSQL and responsible for the installer. EDB offer paid services for enterprises, but PostgreSQL itself is free. Here you can download PostgreSQL from the ERD webpage.

Resources

PostgreSQL (YouTube) + PowerPoint (PDF)