Beginner
Big Data & Data Engineering
Q24 / 100
In a relational database, what is the purpose of a primary key?
Correct! Well done.
Incorrect.
The correct answer is A) To uniquely identify each record in a table
A
Correct Answer
To uniquely identify each record in a table
Explanation
A primary key is a column (or set of columns) whose values uniquely identify each row, ensuring no duplicate identifiers exist.
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24/100