Question

❣ 1) what is cardinality ? ❣​

Answer 1

Answer:

Explanation:

Cardinality. Cardinality refers to the relationship between a row of one table and a row of another table. The only two options for cardinality are one or many. Example: Think of a credit card company that has two tables: a table for the person who gets the card and a table for the card itself.

Answer 2

The cardinality of a set is a measure of the number of elements of the set .

Example :- the set A = { 2 , 4 , 6 , 8 } contains 4 elements, and therefore A has a cardinality of 4 .

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