How Is the SEDRIS DRM Expressed In Actual Data Sets?
Actual data sets contain objects - instances of DRM classes.
The formal relationships between classes specify what relationships are allowed to exist between instances of those classes and what those relationships mean.
The constraints further refine requirements for objects in specific contexts.
A SEDRIS data set or database is called a transmittal, and the objects contained within it are organized as a tree in terms of aggregate / component (whole vs. part) relationships between objects.