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.

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 10 of 11

Explore more Topics under DBMS

01

DBMS Basics

02

Data Models

03

The Entity Relationship Approach

04

Relational Databases

05

Data Storage and Querying

06

Normalization

07

Storage and File Structures

08

Indexing and Hashing

09

Transactions

10

Concurrency Control

11

Recovery System

12

Distributed Databases

13

SQL

14

Data Warehousing and Data Mining

15

RDBMS

16

Advanced SQL

17

SQL Queries,Constraints and Triggers

Q91.

The expression of generalized projection can be written as

π F1, F2, Fn ( R )

θ F1, F2, Fn ( R )

σ F1, F2, Fn ( R )

β F1, F2, Fn ( R )

Discuss

Answer: (a).π F1, F2, Fn ( R )

Q92.

The expression which specifies the procedure to retrieve rather than retrieval content is classified as

procedural expression

structural expression

functional expression

calculus expression

Discuss

Answer: (d).calculus expression

Q93.

In a query tree, the input relations of query are classified as

attribute nodes

leaf nodes

stem nodes

root nodes

Discuss

Answer: (b).leaf nodes

Q94.

With the help of selection condition, the fraction of selected tuples is classified as

insertion of condition

functionality of condition

selectivity of the condition

interactivity of condition

Discuss

Answer: (c).selectivity of the condition

Q95.

The most convenient operation which is used for the queries having universal quantification is classified as

division operation

multiply operation

add operation

subtracted operation

Discuss

Answer: (a).division operation

Q96.

Find the ID, name, dept name, salary for instructors whose salary is greater than $80,000 .

{t | t ε instructor ∧ t[salary] > 80000}

Э t ∈ r (Q(t))

{t | Э s ε instructor (t[ID] = s[ID]∧ s[salary] > 80000)}

None of the mentioned

Discuss

Answer: (a).{t | t ε instructor ∧ t[salary] > 80000}

Q97.

A query in the tuple relational calculus is expressed as:

{t | P() | t}

{P(t) | t }

{t | P(t)}

All of the mentioned

Discuss

Answer: (c).{t | P(t)}

Q98.

Which of the following best describes the query ?

{t | &#x42D; s &#x3B5; instructor (t[name] = s[name]
∧ &#x42D; u &#x3B5; department (u[dept name] = s[dept name]
∧ u[building] = “Watson”))}

Finds the names of all instructors whose department is in the Watson building.

Finds the names of all department is in the Watson building.

Finds the name of the dapartment whose instructor and building is Watson.

Returns the building name of all the departments.

Discuss

Answer: (a).Finds the names of all instructors whose department is in the Watson building.

Q99.

Which of the following symbol is used in the place of except ?

Discuss

Answer: (c).¬

Q100.

“Find all students who have taken all courses offered in the Biology department.” The expressions that matches this sentence is :

Э t ε r (Q(t))

∀ t ε r (Q(t))

¬ t ε r (Q(t))

~ t ε r (Q(t))

Discuss

Answer: (b).∀ t ε r (Q(t))

Page 10 of 11

Welcome to the Relational Algebra MCQs Page

Relational Algebra MCQs | Page 10 of 11

Explore more Topics under DBMS

DBMS Basics

Data Models

The Entity Relationship Approach

Relational Databases

Data Storage and Querying

Normalization

Storage and File Structures

Indexing and Hashing

Transactions

Concurrency Control

Recovery System

Distributed Databases

SQL

Data Warehousing and Data Mining

RDBMS

Advanced SQL

SQL Queries,Constraints and Triggers

Suggested Topics

Object Oriented Programming

PHP

Systems Analysis and Design Methods

DBMS

JavaScript

Microprocessor

Computer Hardware

Reverse Engineering

Java Spring Framework