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unit 5 pt1

Authored by Veraaaa V

Instructional Technology

University

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unit 5 pt1
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14 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary purpose of Entity-Relationship (ER) modeling?

To manage network security

To design database structures

To develop software applications

To create user interfaces

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is NOT a basic concept of the ER model?

Relationships

Functions

Entities

Attributes

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does a binary relationship involve?

One entity type

Two entity types

Three entity types

Four entity types

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a weak entity type?

An entity with no attributes

An entity with a strong primary key

An entity that is existence-dependent

An entity that can exist independently

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following describes a composite attribute?

An attribute derived from another attribute

An attribute with multiple components

An attribute that cannot exist independently

An attribute with a single value

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a candidate key?

A key that is not unique

A key that is derived from another key

A key that is used for foreign key relationships

A minimal set of attributes that uniquely identifies an entity

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which relationship type is characterized by the same entity type participating more than once?

Quaternary relationship

Recursive relationship

Ternary relationship

Binary relationship

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