In this chapter, we acquainted ourselves with the GUI of QGIS and explained about data models in GIS. With this knowledge, it will be easier to come up with specific workflows later as we have an idea how the input data work and what we can do with it. We also learned about one of the mandatory cartographic elements--the map scale.
In the next chapter, we will use our vector data in another way. We will make queries on our vector layers by using both their attribute data and geometries. Finally, we will learn how to join the attributes of different layers in order to make richer layers and give ourselves more options on further visualization and analysis tasks.
