engineering computer science MCQ #877

engineering computer science MCQ #877

1. Question 1

   Q1. What is a foreign key in a relational database?

   • A) A key that uniquely identifies a record
   • B) A key that references the primary key of another table
   • C) A key that is used for indexing
   • D) A key that is used for data encryption

   Answer: A key that references the primary key of another table

   Explanation: A foreign key references the primary key of another table, establishing a relationship between the two tables.