engineering computer science MCQ #666

What is the term for a column or set of columns that uniquely identifies a record?

engineering computer science MCQ #666

  1. Question 1

    Q1. What is the term for a column or set of columns that uniquely identifies a record?

    • A) Primary key
    • B) Foreign key
    • C) Index
    • D) Constraint

    Answer: Primary key

    Explanation: A primary key uniquely identifies each record in a table, ensuring data integrity and preventing duplicates.