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Welcome to the The Entity Relationship Approach MCQs Page

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

The Entity Relationship Approach MCQs | Page 2 of 31

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Q11.
Which one of the following is a set of one or more attributes taken collectively to uniquely identify a record?

a.

Candidate key

b.

Sub key

c.

Super key

d.

Foreign key

Discuss
Answer: (c).Super key
Q12.
Consider attributes ID , CITY and NAME . Which one of this can be considered as a super key ?

a.

NAME

b.

ID

c.

CITY

d.

CITY , ID

Discuss
Answer: (b).ID
Q13.
The subset of super key is a candidate key under what condition ?

a.

No proper subset is a super key

b.

All subsets are super keys

c.

Subset is a super key

d.

Each subset is a super key

Discuss
Answer: (a).No proper subset is a super key
Q14.
Which type of entity cannot exist in the database unless another type of entity also exists in the database, but does not require that the identifier of that other entity be included as part of its own identifier?

a.

Weak entity

b.

Strong entity

c.

ID-dependent entity

d.

ID- independent entity

Discuss
Answer: (a).Weak entity
Q15.
In a one-to-many relationship, the entity that is on the one side of the relationship is called a(n) ________ entity.

a.

parent

b.

child

c.

instance

d.

subtype

Discuss
Answer: (a).parent
Q16.
Which type of entity represents an actual occurrence of an associated generalized entity?

a.

Supertype entity

b.

Subtype entity

c.

Archetype entity

d.

Instance entity

Discuss
Answer: (d).Instance entity
Q17.
A recursive relationship is a relationship between an entity and ________ .

a.

itself

b.

a subtype entity

c.

an archetype entity

d.

an instance entity

Discuss
Answer: (a).itself
Q18.
Which of the following indicates the minimum number of entities that must be involved in a relationship?

a.

Minimum cardinality

b.

Maximum cardinality

c.

ERD

d.

Greater Entity Count (GEC)

Discuss
Answer: (a).Minimum cardinality
Q19.
Which of the following refers to something that can be identified in the users' work environment, something that the users want to track?

a.

Entity

b.

Attribute

c.

Identifier

d.

Relationship

Discuss
Answer: (a).Entity
Q20.
In which of the following is a single-entity instance of one type related to many entity instances of another type?

a.

One-to-One Relationship

b.

One-to-Many Relationship

c.

Many-to-Many Relationship

d.

Composite Relationship

Discuss
Answer: (b).One-to-Many Relationship
Page 2 of 31

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