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Cardinality

Cardinality

WordNet



noun


(1)   (mathematics) the number of elements in a set or group (considered as a property of that grouping)
Wiktonary



Noun



  1. Of a set, the number of elements it contains.
    The empty set has a cardinality of zero.
  2. The property of a relationship between a database table and another one, specifying whether it is one-to-one, one-to-many, many-to-one, or many-to-many.