cardinality

the cardinality of a set refers to the number of elements it contains.

in database theory, cardinality describes the relationship between two tables.

understanding cardinality is crucial for designing efficient databases.

the cardinality of a relation can be one-to-one, one-to-many, or many-to-many.

cardinality constraints help ensure data integrity in databases.

when modeling data, consider the cardinality of each relationship.

high cardinality fields can lead to performance issues in queries.

cardinality can also refer to the number of unique values in a dataset.

in set theory, cardinality helps compare the sizes of different sets.

defining the cardinality of relationships is essential for database normalization.