Create a simple association to quickly define an explicit relationship between two classes. Use a simple association when all of the following conditions are true.

• The join is to only one class.
• The join type is left outer.
• The join is to a class using a singular key.

Use an advanced association for all other conditions. View associations that are available for reporting in the Visual data model.

The following figure shows the configuration for a simple association:

The following figure shows the configuration for an advanced association:

For more information, see Exploring the data model.