What is a primary key?
A) A field (or group of fields) that uniquely identifies a given record in a table
B) A primary key of one table that appears as an attribute in another table and acts to provide a logical relationship among the two tables
C) Characteristics or properties of an entity
D) A field (or group of fields) that uniquely identifies a given attribute in a table

Question

Quizplus · Accepted Answer

A primary key is a unique identifier for a record in a database table, ensuring that each record can be uniquely identified from the others.

What Is a Primary Key