Chapter 6: Star Schema Preparation in Power Query Editor

We learned about some common data preparation steps in the previous chapter, including data type conversion, split column, merge columns, adding a custom column, and filtering rows. We also learned how to create summary tables using the Group By feature, appending data, and merging queries.

This chapter will use all the topics we discussed in the past few chapters and help you learn how to prepare a Star Shema in Power Query Editor. Data modeling in Power BI starts with preparing a Star Schema. In this chapter, we'll use the Chapter 6, Sales Data.xlsx file, which contains flattened data. This is a common scenario many of us have faced; we get a set of files containing data that have been exported from a source system, and we need to build a report to answer business questions. Therefore, having the required skills to build a Star Schema on top of a flat design comes in handy.

In this chapter, we will cover the following...