Creating Relationships
One of the most important data modeling features of Power BI, as well as Analysis Services Tabular, is the control the modeler has over defining the filtering behavior between tables via relationships. In addition to one-to-many, single-direction relationships, Power BI models can contain bidirectional relationships, one-to-one relationships, many-to-many relationships, and even DAX measures that contain their own relationship filtering logic via functions such as USERELATIONSHIP and CROSSFILTER. These relationship tools, along with modifying the filter context of measures through DAX, can be used to support many-to-many modeling scenarios and provide alternative model behaviors for multiple business requirements.
In this recipe, we look at single-direction relationships, as well as the primary use cases for bidirectional relationships, and DAX-based cross-filtering.
Getting ready
To prepare for this recipe, follow these steps:
- Open Power...
