July 2001
Intermediate to advanced
656 pages
15h 51m
English
book
Applying UML and Patterns: An Introduction to Object-Oriented Analysis and Design and the Unified Process, Second Edition
by Craig Larman
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11.8. Multiple Associations Between Two Types
Two types may have multiple associations between them; this is not uncommon. There is no outstanding example in our POS case study, but an example from the domain of the airline is the relationships between a Flight (or perhaps more precisely, a FlightLeg) and an Airport (see Figure 11.7); the flying-to and flying-from associations are distinctly different relationships, which should be shown separately.
Figure 11.7. Multiple associations.
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