Which of the following is a likely primary key in a student information record?
A) Last name
B) Date of birth
C) Student ID number
D) First name

Question

Quizplus · Accepted Answer

The Student ID number is the best choice for a primary key in a student information record because it is unique to each student and will not change throughout their time at the institution. Last name and first name are not unique enough and may change due to marriage or other reasons, and date of birth is also not unique enough as there may be multiple students with the same birthdate.

Which of the Following Is a Likely Primary Key in a Student