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UML and Data Modeling: A Reconciliation by David Hay

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Figure 5-2: Parties

Party Relationships

People are related to each other; people belong to unions and clubs; departments are contained in divisions; companies band together into industrial associations, buying groups, and so forth.

To address this diversity of possible associations among Parties, the entity class Party Relationship is introduced in Figure 5-3. This allows us to represent any relationship between two parties. That is, each Party Relationship is defined to be from one Party and to another Party.

Figure 5-3: Party Relationships

Thus, a Party Relationship from PersonGeorge Gobel to OrganizationThe Screen Actors Guild between ...

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