This chapter covered foundational concepts of how Tableau works with data. Although you will not usually be concerned with the queries Tableau generates to query underlying data engines, having a solid foundational understanding of Tableau's paradigm will greatly aid you as you to analyze data.
We looked at multiple examples of different connections to different data sources, considered the benefits and potential drawbacks of using data extracts, considered how to manage metadata, dived into details on joins and blends, and finally considered options for filtering data.
Working with data is fundamental to everything you do in Tableau. Having an understanding of connecting to various data sources, working with extracts, customizing metadata, and the difference between joins and blends will be the key as you begin deeper analysis and more complex visualizations, such as those covered in the next chapter.
