In this tutorial I’ll show you how to use data relationships in layer attributes using VALUE MAP and VALUE RELATION widget type. You will learn how to create a new layer with is actually linkable and how to build and populate data links.

Using this you will never have bad data in your geospatial surveys as you can set constraints and reliable data sources.

🔴 What is QGIS?

QGIS is a professional GIS application that is built on top of and proud to be itself Free and Open Source Software (FOSS).

🗺️ Tales from the GIS?

Tales from the GIS is a geospatial journey into the fascinating world of Geographic Information Systems, telling you stories about nature and world.