July 2004
Intermediate to advanced
752 pages
35h 59m
English
book
Unified Modeling Language Reference Manual, The, Second Edition
by James Rumbaugh, Ivar Jacobson, Grady Booch
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multiplicity (of association)
The multiplicity specified on an association end.
See multiplicity.
Semantics
The multiplicity attached to an association end declares how many objects may fill the position defined by the association end.
For a binary association, the multiplicity on the target end constrains how many objects of the target class may be associated with a given single object from the other (source) end. Multiplicity is typically given as a range of integers. (See multiplicity for a more general definition.) Common multiplicities include exactly one; zero or one; zero or more, without limit; and one or more, without limit. The phrase “zero or more, without limit” is usually called many. If the multiplicity is greater than one, it also ...
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