Docs in progress for ‘QGIS testing’. Visit https://docs.qgis.org/2.18 for QGIS 2.18 docs and translations.

16. Module: Database Concepts with PostgreSQL

Relational Databases are an important part of any GIS system. In this module, you’ll learn about Relational Database Management System (RDBMS) concepts and you will use PostgreSQL to create a new database to store data, as well as learning about other typical RDBMS functions.