How can you create and edit relationships in erwin DM NoSQL?

using document databases, there may be multiple places where pieces of data may be duplicated. Because of this, there is a need to identify and visualize the logical relationships between 'referencing' data in the NoSQL database, even if referential integrity is being enforced by the application code itself.  

• On an editable model you can create and edit relationships on the model by clicking and dragging the attributes that the relationships use.

• Again on a model that has been made editable, you can context click a relationship and delete it.

You can also use the up and down arrows to easily identify which is the parent and which is the child collection in the relationship