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Data Analysis eXpressions and Data Modeling
The previous chapter discussed that Power BI has different layers: data preparation, data modeling, and data visualization. This chapter discusses Data Analysis eXpressions (DAX), and their relationship to data modeling. Although data modeling and DAX are connected such that you cannot imagine one without the other, our goal in this book is not to focus only on DAX. Data modeling encompasses much broader concepts, while DAX is the expression language developers must use to implement business logic in the data model. We assume that you have an intermediate level of knowledge of DAX; therefore, we do not cover basic DAX concepts in this book such as DAX syntax. Instead, we focus on more advanced ones ...
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