You need only one thing to create stunning visualizations and that is good data. Specifically, you need data loaded into the Power BI Desktop data model where you can handle tens of millions of rows from multiple data sources and hone them into a coherent and powerful framework on which you can build your analyses and dashboards.
Finding, editing, and loading the source data using queries (as you learned in Chapters 2 through 5) is fundamental to preparing your data for the data model. However, the process does not stop there. Once you have made accessible the data that you need you still have a ...
