Summary
In this chapter, we learned about adding additional fields to our data model through the relationship feature in Tableau. Relationships give us flexibility by allowing us to create relationships at the logical layer of databases. With relationships, we leave the mapping of joining data at the physical layer for Tableau to create dynamically, depending on the field we use in our analyses.
We looked at how relationships are different than joins and various use cases for relationships where joins would result in multiple data models. We also looked at how performance options are available to optimize relationship query performance.
In the final section, we looked at adding additional rows to our data model by using manual and wildcard unions.
The next chapter will focus on creating joins in Tableau Desktop at the physical database layer. We will also explore geospatial joins and custom SQL.
