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Welcome to the Relational Databases MCQs Page

Dive deep into the fascinating world of Relational Databases with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Relational Databases, a crucial aspect of DBMS. In this section, you will encounter a diverse range of MCQs that cover various aspects of Relational Databases, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within DBMS.

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Check out the MCQs below to embark on an enriching journey through Relational Databases. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of DBMS.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Relational Databases. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Relational Databases MCQs | Page 2 of 12

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Q11.
Foreign key is the one in which the ________ of one relation is referenced in another relation.

a.

Foreign key

b.

Primary key

c.

References

d.

Check constraint

Discuss
Answer: (b).Primary key
Q12.
Domain constraints, functional dependency and referential integrity are special forms of _________.

a.

Foreign key

b.

Primary key

c.

Assertion

d.

Referential constraint

Discuss
Answer: (c).Assertion
Q13.
Which one of the following uniquely identifies the elements in the relation?

a.

Secondary Key

b.

Primary key

c.

Composite key

d.

Foreign key

Discuss
Answer: (b).Primary key
Q14.
A _____ is a property of the entire relation, rather than of the individual tuples in which each tuple is unique.

a.

Rows

b.

Key

c.

Attribute

d.

Fields

Discuss
Answer: (b).Key
Q15.
Which one of the following attribute can be taken as a primary key ?

a.

Name

b.

Street

c.

Id

d.

Department

Discuss
Answer: (c).Id
Q16.
Which one of the following cannot be taken as a primary key ?

a.

Id

b.

Register number

c.

Dept_id

d.

Street

Discuss
Answer: (d).Street
Q17.
A attribute in a relation is a foreign key if the _______ key from one relation is used as an attribute in that relation .

a.

Candidate

b.

Primary

c.

Super

d.

Sub

Discuss
Answer: (b).Primary
Q18.
The relation with the attribute which is the primary key is referenced in another relation. The relation which has the attribute as primary key is called

a.

Referential relation

b.

Referencing relation

c.

Referenced relation

d.

Referred relation

Discuss
Answer: (b).Referencing relation
Q19.
The ______ is the one in which the primary key of one relation is used as a normal attribute in another relation .

a.

Referential relation

b.

Referencing relation

c.

Referenced relation

d.

Referred relation

Discuss
Answer: (c).Referenced relation
Q20.
A _________ integrity constraint requires that the values appearing in specified attributes of any tuple in the referencing relation also appear in specified attributes of at least one tuple in the referenced relation.

a.

Referential

b.

Referencing

c.

Specific

d.

Primary

Discuss
Answer: (a).Referential
Page 2 of 12

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