In this chapter, we will learn how to graphically see the data stored in our spatial databases. To achieve this goal, we will use a powerful tool called QGIS. We have used this tool in the previous chapter, but we will now take a closer look at it. This chapter isn't a complete and exhaustive guide of QGIS; its objective is to be a practical and useful reference that can achieve this book's goals.
In this chapter, we will cover the following topics:
Learning the basics of how to use QGIS
Seeing the data stored in our databases
Using some additional data formats, besides the data stored in our databases
Building and using spatial queries from the QGIS interface