Cardinality (disambiguation)
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Cardinality may refer to
- Cardinality of a set, a measure of the "number of elements" of a set in mathematics
- Cardinality of a musical set, the number of pitch classes
- Cardinality (data modeling), a term in database design
- Cardinality (SQL statements), a term used in SQL statements
- Cardinal utility, in contrast with ordinal utility, in economics
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