Question: An employee relation has a column ( attribute ) named social security number ( SSN ) . The SSN values are 9 digit numbers, unique

An employee relation has a column

(

attribute

)

named social security number

(

SSN

) .

The SSN values are

9

digit numbers, unique to each employee, that represent a government issued identifier. Which of the following is the term from the description of the SSN

?

Group of answer choices data descriptor domain of values value validator data classifier

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