Cardinality (disambiguation)
Encyclopedia
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)Cardinality (data modeling)In data modeling, the cardinality of one data table with respect to another data table is a critical aspect of database design. Relationships between data tables define cardinality when explaining how each table links to another....
, a term in database design - Cardinality (SQL statements)Cardinality (SQL statements)In SQL , the term cardinality refers to the uniqueness of data values contained in a particular column of a database table. The lower the cardinality, the more duplicated elements in a column. Thus, a column with the lowest possible cardinality would have the same value for every row...
, a term used in SQL statements - Cardinal utilityCardinal utilityIn economics, cardinal utility refers to a property of mathematical indices that preserve preference orderings uniquely up to positive linear transformations...
, in contrast with ordinal utility, in economics