October 2002
Intermediate to advanced
288 pages
5h 4m
English
Content preview from Visual Modeling with Rational Rose 2002 and UMLBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Summary
Relationships provide the conduit for object interaction. Two types of relationships between classes that are discovered during analysis are associations and aggregations. An association is a bidirectional semantic connection between classes. An aggregation is a specialized form of association in which a whole is related to its part(s).
An association may be named. Usually the name is an active verb or verb phrase that communicates the meaning of the relationship. Roles can be used instead of association names. A role name is a noun that denotes the purpose or capacity wherein one class associates with another. Multiplicity is the number of instances that participate in a relationship. There are two multiplicity indicators for each association ...
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