Sorted:

PostgreSQL on Linux: Install & Configure Guide

Create PostgreSQL Database: Step-by-Step Guide

PostgreSQL Backup & Restore Guide

PostgreSQL Python Connection: Query Database

PostgreSQL Transactions & Rollbacks Guide

PostgreSQL Upgrade Guide: Step-by-Step

PostgreSQL Extensions: Install & Manage Guide

Create PostgreSQL Users & Grant Permissions

How to Create SQLite Database: Step-by-Step

Force Delete Folder CentOS