Rapid transitions between methodological stages are supported in RMCase via navigation among contexts. An entity is a conceptual element from the application domain, characterized by a set of attributes. An attribute represents a unit of information. Attributes have a name and type and are always associated with a unique entity or relationship. A relationship is a conceptual tie among two or more entities.
Relationships can also contain attributes.
The entities Faculty and Courses , and the relevant relationships are shown along with their attributes in Figure 3. The inner structure of an entity is designed in this context. A slice is a set of attributes belonging to a given entity. An attribute can be part of number slices. Each entity has a distinguished slice, called the entity's head , that is to be used as a default entry point for incoming access constructs.