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Unified Modeling Language Reference Manual, The, Second Edition
book

Unified Modeling Language Reference Manual, The, Second Edition

by James Rumbaugh, Ivar Jacobson, Grady Booch
July 2004
Intermediate to advanced
752 pages
35h 59m
English
Addison-Wesley Professional
Content preview from Unified Modeling Language Reference Manual, The, Second Edition

transient link

A link that exists for a limited duration, such as for the execution of an operation.

See also association, collaboration, usage.

Semantics

During execution, some links exist for a limited duration. Of course, almost any object or link has a limited lifespan, if the time period is great enough. Some links, however, exist only in certain limited contexts, such as during the execution of a method. Procedure arguments and local variables can be represented by transient links. It is possible to model all such links as associations, but then the conditions on the associations must be stated very broadly, and they lose much of their precision in constraining combinations of objects. Such situations can instead be modeled using collaborations, ...

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Publisher Resources

ISBN: 0321245628Purchase book