You need only one thing to create stunning visualizations and that is good data. Specifically, you need clean and accurate data loaded into the Power BI Desktop data model. There you can hone tens of millions of rows from multiple data sources into a coherent and powerful framework on which you can build your analyses and dashboards.
Finding, transforming, and loading the source data using queries (as you learned in Chapters 1 through 12) are 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 ...
