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Cardinality (source cardinality)

Attribute: Specifies the number of connections (capability) between the source object and the target object.

1 (Cardinality 1) = One unit (1)

c (Source cardinality c) = None or one unit (0 and 1)

cn (Source cardinality cn) = None to any number of units (0 to infinite)

n (Source cardinality n) = One to any number of units (1 to infinite)

2... (Source cardinality 2) = Two and more units (2 to infinite)