Grafo

Cardinality

An atttribute's cardinality is the number of values that it should possess.

Consider the example of a Person concept with attributes for Given Name, Surname, and Nickname. If a Person should have at least one Given Name, at most one Surname and zero or any number of Nicknames, then the cardinality for the attribute Given Name would be min = 1:

05-06-attribute-cardinality-given-name.png

Surname should be set as exact = 1:

05-07-attribute-cardinality-surname.png

And Nickname should be min = 0:

05-08-attribute-cardinality-nickname.png