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=== Multiplicity ===
Except name and name direction, an association can have more characteristics. With [[Multiplicity (mathematics)|multiplicity]] one can state how many objects of a certain concept can be connected across an instance of an association. Multiplicity is visualized by using the following expressions: (1) for exactly one, (0..1) for one or zero, (0..*) for zero or more, (1..*) for one or more, or for example (5) for an exact number. In Figure 7 association with multiplicity is visualized.
:[[Image:Mm37.gif|frame|left|Figure 7: Multiplicity]]
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