What is the purpose of a primary key?
A)To establish a link from one table to another
B)To be the first identifier, which does not need to be unique
C)To use a row that uniquely identifies a column
D)To link a column to another column

Question

Quizplus · Accepted Answer

A primary key's purpose is to uniquely identify each row in a table, ensuring data integrity and enabling relationships between tables.

What Is the Purpose of a Primary Key