In a relational database, every record must be uniquely identified by a _____.
A) primary key
B) super key
C) remote key
D) candidate key

Question

In a relational database, every record must be uniquely identified by a _____. ​
A) primary key
B) super key
C) remote key
D) candidate key

Quizplus · Accepted Answer

In a relational database, every record must be uniquely identified by a primary key, which is a column or group of columns that uniquely identifies each row in a table. A super key is a set of one or more columns that can be used to uniquely identify each row, but not every super key is suitable for use as a primary key. A remote key and candidate key are not commonly used terms in relation to database design.

In a Relational Database, Every Record Must Be Uniquely Identified