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Answer Posted / malathy
Cardinality is defined during foreign key relationship.The
cardinality of the foreign key relationship describes, for
each value in the check table, how many rows of data are
allowed to be in the foreign key table.
Cardinality is defined as X:Y, where refers to the check
table and Y refers to the foreign key table. X can have
only values 1 or C and Y can be 1,C,N or CN.
1,C,N,CN has specific descriptions.
cardinality is not enforced by the system.It is optional.
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