NOV-7 describes the structure of an architecture domain's system data types and the structural business process rules (defined in the architecture's NOV subviews) that govern the system data. It provides a definition of architecture domain data types, their attributes or characteristics, and their interrelationships.

HOPEX NAF can be used to design data models in NOV-7. The data model is a concept that can be graphically designed in Data model diagrams. The user creates new data models from the NAF navigation tree.

The data models are described by one or more data model diagrams, which contain entities with their attributes and the associations between the entities.

The entities should correlate with the NOV-3 information elements. These elements are modeled with the HOPEX content objects and the content can be linked to a data model.

In turn, NOV-7 should be used as an input to NSV-11, which captures logical and physical data models.