Question 1

Which of the following is true of a data model?

Accepted Answer

A) It is created after the database is designed. 
B) It is an attribute whose value is associated with only one entity instance. 
C) It is a logical representation of the structure of the data. 
D) It does not describe the relationships among the data. 
A) It is created after the database is designed. 
B) It is an attribute whose value is associated with only one entity instance. 
C) It is a logical representation of the structure of the data. 
D) It does not describe the relationships among the data.

Question 2

Which of the following is true of entities?

Accepted Answer

A) Entities have an identifier whose value is associated with every entity in the data model. 
B) Entities can only represent a logical construct or transaction,not a physical object. 
C) The characteristics of entities are described by attributes. 
D) The names of entities are always plural. 
A) Entities have an identifier whose value is associated with every entity in the data model. 
B) Entities can only represent a logical construct or transaction,not a physical object. 
C) The characteristics of entities are described by attributes. 
D) The names of entities are always plural.

Question 3

The crow's foot notation shows the minimum number of entities that can be involved in a relationship.

Accepted Answer

A) True 
 B)False

Question 4

While representing the relationship between two entities in an entity-relationship diagram,the N:N notation is used to indicate that the same number of entities are present on each end of the relationship.

Accepted Answer

A) True 
 B)False

Which of the following is true of a data model?

Which of the following is true of entities?

The crow's foot notation shows the minimum number of entities that can be involved in a relationship.

While representing the relationship between two entities in an entity-relationship diagram,the N:N notation is used to indicate that the same number of entities are present on each end of the relationship.

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Introduction to Microsoft Excel 2013

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Exam 17: Database Design

Which of the following is true of a data model?

Which of the following is true of entities?

The crow's foot notation shows the minimum number of entities that can be involved in a relationship.

While representing the relationship between two entities in an entity-relationship diagram,the N:N notation is used to indicate that the same number of entities are present on each end of the relationship.

The Importance of MIS

Business Processes, information Systems, and Information

Organizational Strategy, information Systems, and Competitive Advantage

Hardware and Software

Database Processing

The Cloud

Organizations and Information Systems

Social Media Information Systems

Business Intelligence Systems

Information Systems Security

Information Systems Management

Information Systems Development

Collaboration Information Systems for Decision Making problem Solving and Project Management

Collaborative Information Systems for Student Projects

Mobile Systems

Introduction to Microsoft Excel 2013

Using Microsoft Access 2013

Using Excel and Access Together

Network and Cloud Technology

Enterprise Resource Planning ERP Systems

Supply Chain Management

Enterprise Social Networks and Knowledge Management

Database Marketing

Reporting Systems and OLAP

Data Breaches

International Mis

Systems Development Project Management

Agile Development

Business Process Management

Filters