From the choices below,identify the attribute below that would make the best primary key.
A)Last name.
B)Date of entry.
C)Airport code.
D)Passport control number.

Question

Quizplus · Accepted Answer

Passport control number is a unique identifier assigned to an individual and can be used as a primary key in a database to ensure that each record is unique. The other options, such as last name, date of entry or airport code, are not necessarily unique and could result in duplicate records.

From the Choices Below,identify the Attribute Below That Would Make