Chapter 1
Prepare the data
Over the past five years, Microsoft Power BI has evolved from a new entrant in the data space to one of the most popular business intelligence tools used to visualize and analyze data. Before you can analyze data in Power BI, you need to prepare, model, and visualize the data. Data preparation is the subject of this chapter; we review the skills necessary to consume data in Power BI Desktop.
We start with the steps required to connect to various data sources. We then review the data profiling techniques, which help you “feel” the data. Later, we look at how you can clean and transform data by using Power Query—this activity often takes a disproportionate amount of time in many data analysis projects. Finally, we show ...
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