What Is A Foreign Key MCQ?

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Multiple Choice Questions (MCQs) are a ubiquitous form of assessment in various fields of study, including database management and information technology. When it comes to databases and their design, the concept of foreign keys plays a crucial role. In this blog post, we’ll explore what a Foreign Key MCQ entails and how it serves as a means of assessing understanding in the realm of database management.

What Is A Foreign Key MCQ?

In database management, a foreign key is a relational concept that establishes a link between two tables within a database. It represents a column or set of columns in one table that refers to the primary key in another table. This relationship between tables ensures data integrity and enables the implementation of constraints to maintain consistency in the database.

What Is A Foreign Key MCQ?

A Foreign Key MCQ is a set of multiple-choice questions designed to assess an individual’s understanding of foreign keys in databases. These questions typically cover various aspects, including the definition, purpose, implementation, and implications of foreign keys in database design and management.

Sample Questions In A Foreign Key MCQ:

What Is A Foreign Key In A Relational Database?

A. A key that uniquely identifies each record in a table.

B. A key that links tables by referencing the primary key in another table.

C. A key used for sorting data in ascending or descending order.

D. A key generated by the database management system.

What Is The Purpose Of A Foreign Key?

A. To uniquely identify records within a table.

B. To establish relationships between tables.

C. To enforce data validation rules.

D. To perform calculations within the database.

Which Constraint Ensures Referential Integrity In A Database Involving Foreign Keys?

A. Primary Key constraint

B. Unique Key constraint

C. Foreign Key constraint

D. Check constraint

In A Parent-Child Table Relationship, Which Table Contains The Foreign Key?

A. Child table

B. Parent table

C. Both tables contain Foreign Keys.

D. Neither table contains a Foreign Key.

Significance Of Foreign Key MCQs:

Foreign Key MCQs serve as an effective assessment tool in educational settings, certification exams, or interviews, evaluating a candidate’s comprehension and proficiency in database design and management. These questions gauge the ability to identify relationships between tables, enforce data integrity, and understand the significance of referential constraints in maintaining a well-structured database.


Foreign Key MCQs are instrumental in assessing an individual’s grasp of the concepts and principles related to database design and management, specifically focusing on the role and implementation of foreign keys. By testing knowledge and understanding through these questions, educators, evaluators, and employers gain insights into an individual’s proficiency in utilizing foreign keys for maintaining relational databases.


What Is Foreign Key Key?

A foreign key (FK) is a column or combination of columns that is used to establish and enforce a link between the data in two tables to control the data that can be stored in the foreign key table.

What Is A Foreign Key Referred As?

A foreign key is a column or group of columns in a relational database table that provides a link between data in two tables. It acts as a cross-reference between tables because it references the primary key of another table, thereby establishing a link between them.

What Is The Primary Key In MCQ?

Explanation: The primary key is a single or combination of the field that identifies each record in a table uniquely. It cannot take a NULL value.

What Is A Foreign Key Attribute?

A foreign key is defined as an attribute or set of attributes in a relation whose values match a primary key in another relation. The syntax to add such a constraint to an existing table is defined in SQL:2003 as shown below.

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