17.3. Relationship and Class of Relationship
Figure 17-3 shows the data model for relationship and class_of_relationship . It is part of the metamodel for the HQDM Framework supporting the addition of types of relationships and their instances through data.
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Figure 17-3
HQDM_FRAMEWORK EXPRESS-G diagram 3 of 46.
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relationship is an abstract entity type, so its members must belong to one of its subtypes. There are two possibilities, either it is an explicit subtype with roles defined, such as classification and aggregation , or it is a defined_relationship . A defined_relationship involves at least two things with each in a particular ...
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