Welcome to the Data Models MCQs Page

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

Data Models MCQs | Page 10 of 19

Explore more Topics under DBMS

01

DBMS Basics

02

The Entity Relationship Approach

03

Relational Databases

04

Data Storage and Querying

05

Relational Algebra

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.

Which of the following is true concerning the following statement:
class Manager extends Employee

Manager is a concrete class and a superclass.

Manager is a concrete class and a subclass.

Manager is an abstract class and a superclass.

Manager is an abstract class and a subclass.

Discuss

Answer: (b).Manager is a concrete class and a subclass.

Q92.

The reserved word enum is used for which of the following?

To define a range for an attribute.

To define a range for a class.

To define a range for a relationship.

All of the above.

Discuss

Answer: (a).To define a range for an attribute.

Q93.

ODL supports which of the following types of association relationships?

Unary

Unary and Binary

Unary and Binary and Ternary

Unary and Binary and Ternary and higher

Discuss

Answer: (b).Unary and Binary

Q94.

An atomic literal is which of the following?

Strings

Boolean

Long

All of the above.

Discuss

Answer: (d).All of the above.

Q95.

The keyword "inverse" is used in which of the following?

Class

Attribute

Relationship

All of the above.

Discuss

Answer: (c).Relationship

Q96.

An extent is which of the following?

A keyword that indicates that the subclass inherits from a superclass

A keyword that indicates that the superclass inherits from a subclass

The set of all instances of a class within a database

Only one instance of a class within a database

Discuss

Answer: (c).The set of all instances of a class within a database

Q97.

Which of the following is true concerning an ODBMS?

They have the ability to store complex data types on the Web.

They are overtaking RDBMS for all applications.

They are most useful for traditional, two-dimensional database table applications.

Both a and c

Discuss

Answer: (d).Both a and c

Q98.

Which of the following is not a logical data-base structure?

tree

relational

network

chain

Discuss

Answer: (d).chain

Q99.

The relational model uses some unfamiliar terminology. A tuple is equivalent to a:

record

field

file

data base

Discuss

Answer: (a).record

Q100.

A top-to-bottom relationship among the items in a database is established by a

Hierarchical schema

Network schema

Relational schema

All of the above

Discuss

Answer: (a).Hierarchical schema

Page 10 of 19

Welcome to the Data Models MCQs Page

Data Models MCQs | Page 10 of 19

Explore more Topics under DBMS

DBMS Basics

The Entity Relationship Approach

Relational Databases

Data Storage and Querying

Relational Algebra

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

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