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Welcome to the Relational Algebra MCQs Page

Dive deep into the fascinating world of Relational Algebra with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Relational Algebra, a crucial aspect of DBMS. In this section, you will encounter a diverse range of MCQs that cover various aspects of Relational Algebra, 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 Algebra. 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 Algebra. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Relational Algebra MCQs | Page 4 of 11

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Q31.
Cross Product is a:

a.

Unary Operator

b.

Ternary Operator

c.

Binary Operator

d.

Not an operator

Discuss
Answer: (c).Binary Operator
Q32.
Consider the join of a relation R with relation S. If R has m tuples and S has n tuples, then the maximum size of join is:

a.

mn

b.

m+n

c.

(m+n)/2

d.

2(m+n)

Discuss
Answer: (a).mn
Q33.
The natural join is equal to :

a.

Cartesian Product

b.

Combination of Union and Cartesian product

c.

Combination of selection and Cartesian product

d.

Combination of projection and Cartesian product

Discuss
Answer: (d).Combination of projection and Cartesian product
Q34.
In unary relational operations, the SELECT operation is partition of relation usually classified as

a.

horizontal partition

b.

vertical partition

c.

insert partition

d.

delete partition

Discuss
Answer: (a).horizontal partition
Q35.
The operators in SELECT operation statement such as 'and' , 'or' and 'not' are classified as

a.

Boolean operators

b.

tuple operators

c.

string operators

d.

insertion operators

Discuss
Answer: (a).Boolean operators
Q36.
If in the JOIN operation, the conditions of JOIN operation are not satisfied then the results of the operation is

a.

zero tuples and empty relation

b.

one tuple from one relation

c.

zero tuples from two relation

d.

two tuples from empty relations

Discuss
Answer: (a).zero tuples and empty relation
Q37.
Because of the calculus expression, the relational calculus is considered as

a.

procedural language

b.

non procedural language

c.

structural language

d.

functional language

Discuss
Answer: (b).non procedural language
Q38.
The DIVISION operation can be applied to two relations A and B such as R(A) ÷ R(B) where as

a.

A does not belong to B

b.

A must be added to B

c.

A belongs or equal to B

d.

A must be subtracted from B

Discuss
Answer: (c).A belongs or equal to B
Q39.
In the EQUIJOIN condition, the operation which is used to avoid superfluous attribute is classified as

a.

ALPHA JOIN

b.

NATURAL JOIN

c.

UNNATURAL JOIN

d.

THETA JOIN

Discuss
Answer: (b).NATURAL JOIN
Q40.
The Boolean expression used in the SELECT operation consists of clauses such as

a.

attribute name

b.

constant value

c.

comparison operators

d.

all of above

Discuss
Answer: (d).all of above
Page 4 of 11

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