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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 5 of 11

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Q41.
The types of binary operations includes

a.

union

b.

intersection

c.

set difference

d.

all of above

Discuss
Answer: (d).all of above
Q42.
In the notation for query graphs, the double ovals or circles are used to represent

a.

non-declarative nodes

b.

constant nodes

c.

stable nodes

d.

declarative nodes

Discuss
Answer: (b).constant nodes
Q43.
The operation which allows to process relationships from multiple relations rather than single relation is classified as

a.

division operation

b.

relation operation

c.

square operation

d.

join operation

Discuss
Answer: (d).join operation
Q44.
The branch of calculus which is based on mathematical logic is classified as

a.

universal calculus

b.

predicate calculus

c.

indicate calculus

d.

local calculus

Discuss
Answer: (b).predicate calculus
Q45.
In a query tree, the operations of relational algebra are classified as

a.

internal nodes

b.

external nodes

c.

theta nodes

d.

entity nodes

Discuss
Answer: (d).entity nodes
Q46.
The operation which is used to take union of tuples from the relations that are not union compatible is classified as

a.

FULL UNION operation

b.

JOIN UNION operation

c.

OUTER UNION operation

d.

INNER UNION operation

Discuss
Answer: (c).OUTER UNION operation
Q47.
If matching tuples are not found, the kind of OUTER JOIN operation which keeps all the tuples of first and second relation is classified as

a.

LEFT OUTER JOIN

b.

FULL OUTER JOIN

c.

HALF OUTER JOIN

d.

DOWNWARD JOIN

Discuss
Answer: (b).FULL OUTER JOIN
Q48.
The operations which are used to enhance the power of expression of relational algebra includes

a.

generalized projection

b.

recursive closure operations

c.

outer JOIN operations

d.

all of above

Discuss
Answer: (d).all of above
Q49.
In the relational calculus, the variables are bounded with the help of

a.

non-identifiers

b.

non-quantifiers

c.

quantifiers

d.

identifiers

Discuss
Answer: (c).quantifiers
Q50.
In unary relational operations, the symbols such as equal to, less than and greater than are classified as

a.

tuple operators

b.

column operators

c.

comparison operators

d.

row operators

Discuss
Answer: (c).comparison operators
Page 5 of 11

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