4. Representing Unidirectional Associations as Reference Properties

A unidirectional association between a source and a target class can be be represented as a reference property of the source class. For the case of a unidirectional one-to-one association, this is illustrated in Figure 8.3 below.

Figure 8.3. Representing the unidirectional association ClubMember has Committee as chairedCommittee as a reference property

Representing the unidirectional association ClubMember has Committee as chairedCommittee as a reference property
Representing the unidirectional association ClubMember has Committee as chairedCommittee as a reference property