Exam 2: Data Modeling

Each student at a university takes many courses; each course is taken by many students. The semester that a student took a course and the grade that the student received in the course is called _____ data.

(Multiple Choice)

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Question 21

The modality of a relationship is the minimum number of entity occurrences that can be involved in a relationship.

(True/False)

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Question 22

An associative entity is an alternate way of describing a many-to-many binary relationship.

(True/False)

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Question 23

An associative entity is an alternate way of describing a one-to-one binary relationship.

(True/False)

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Question 24

A one-to-one binary relationship involves a single entity type.

(True/False)

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Question 25

It is possible to have a many-to-many binary relationship without intersection data.

(True/False)

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Question 26

The cardinality of a relationship is the maximum number of entity occurrences that can be involved in it.

(True/False)

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Question 27

A binary relationship is a relationship between two _____.

(Multiple Choice)

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Question 28

The Entity-Relationship (E-R) model is designed to diagram entity types that are independent of each other.

(True/False)

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Question 29

In a university setting, each student is paired with another student for the purpose of getting assignments and turning in work for the other if he is out of school for any reason. This is a _____ relationship.

(Multiple Choice)

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Question 30

The cardinality of a relationship is the maximum number of entity types that can be involved in it.

(True/False)

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(35)

Question 31

A one-to-one binary relationship _____.

(Multiple Choice)

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Question 32

In a many-to-many unary relationship an occurrence of one entity type can be associated with many occurrences of another entity type while each occurrence of the second entity type can be associated with only one occurrence of the first.

(True/False)

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Question 33

A dependent entity would be of no use to a business environment if the entity that it depends on is no longer of use.

(True/False)

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Question 34

Intersection data _____.

(Multiple Choice)

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Question 35

In a ternary relationship, an occurrence of one entity type is associated with exactly three occurrences of another entity type.

(True/False)

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Question 36

The Entity-Relationship (E-R) model is designed to diagram entity types and the relationships between them.

(True/False)

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(40)

Question 37

A one-to-one unary relationship _____.

(Multiple Choice)

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Question 38

The term "binary" in binary relationship indicates that the relationship is between

(Multiple Choice)

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Question 39

In a many-to-many binary relationship an occurrence of one entity type can be associated with many occurrences of another entity type while each occurrence of the second entity type can be associated with many occurrences of the first.

(True/False)

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Question 40

Showing 21 - 40 of 57

Each student at a university takes many courses; each course is taken by many students. The semester that a student took a course and the grade that the student received in the course is called _____ data.

The modality of a relationship is the minimum number of entity occurrences that can be involved in a relationship.

An associative entity is an alternate way of describing a many-to-many binary relationship.

An associative entity is an alternate way of describing a one-to-one binary relationship.

A one-to-one binary relationship involves a single entity type.

It is possible to have a many-to-many binary relationship without intersection data.

The cardinality of a relationship is the maximum number of entity occurrences that can be involved in it.

A binary relationship is a relationship between two _____.

The Entity-Relationship (E-R) model is designed to diagram entity types that are independent of each other.

In a university setting, each student is paired with another student for the purpose of getting assignments and turning in work for the other if he is out of school for any reason. This is a _____ relationship.

The cardinality of a relationship is the maximum number of entity types that can be involved in it.

A one-to-one binary relationship _____.

In a many-to-many unary relationship an occurrence of one entity type can be associated with many occurrences of another entity type while each occurrence of the second entity type can be associated with only one occurrence of the first.

A dependent entity would be of no use to a business environment if the entity that it depends on is no longer of use.

Intersection data _____.

In a ternary relationship, an occurrence of one entity type is associated with exactly three occurrences of another entity type.

The Entity-Relationship (E-R) model is designed to diagram entity types and the relationships between them.

A one-to-one unary relationship _____.

The term "binary" in binary relationship indicates that the relationship is between

In a many-to-many binary relationship an occurrence of one entity type can be associated with many occurrences of another entity type while each occurrence of the second entity type can be associated with many occurrences of the first.

Data: the New Corporate Resource

The Database Management System Concept

Relational Data Retrieval: SQL

The Relational Database Model: Introduction

The Relational Database Model: Additional Concepts

Logical Database Design

Physical Database Design

Object-Oriented Database Management

Data Administration, Database Administration, and Data Dictionaries

Database Control Issues: Security, Backup and Recovery, Concurrency

Clientserver Database and Distributed Database

The Data Warehouse

Database and the Internet

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