Every citizen in the United States has one social security number,but no two citizens have the same social security number.Thus,the cardinality that exists between social security numbers and citizens is
A) one-to-one.
B) one-to-many.
C) many-to-many.
D) none of the above

Question

Quizplus · Accepted Answer

The relationship between social security numbers and citizens is a one-to-one relationship because one social security number can only be assigned to one citizen and each citizen can only have one social security number.

Every Citizen in the United States Has One Social Security