Test Bank For Accounting Information System 1st Edition by Vernon Richardson

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Test Bank For Accounting Information System 1st Edition by Vernon Richardson

Chapter 03 Data Modeling True / False Questions

1.

The Object Management Group maintains the standard for Unified Modeling Language (UML) Class diagrams. 
 
True    False

2.

Unified Modeling Language (UML) Class diagrams describe the logical structure of a database system. 
 
True    False

3.

A Class is a separately identifiable collection of business relationships. 
 
True    False

4.

In Unified Modeling Language (UML) Class diagrams, a Class is represented by a rectangle. 
 
True    False

5.

In Unified Modeling Language (UML) Class diagrams, Associations are represented by dashed lines. 
 
True    False

6.

In Unified Modeling Language (UML) the options for minimum multiplicity values are 0, 1, and 2. 
 
True    False

7.

In Unified Modeling Language (UML) the options for maximum multiplicity values are 1 and *. 
 
True    False

8.

In Unified Modeling Language (UML) the options for maximum multiplicity values are 0 and *. 
 
True    False

9.

In Unified Modeling Language (UML) the options for minimum multiplicity values are 1 and *. 
 
True    False

10.

In Unified Modeling Language (UML) attributes are characteristics of individual instances of a Class. 
 
True    False

11.

In Unified Modeling Language (UML) primary keys cannot by NULL. 
 
True    False

12.

In Unified Modeling Language (UML) primary keys may be blank. 
 
True    False

13.

In Unified Modeling Language (UML) foreign keys allow tables to be linked together in a database. 
 
True    False

14.

A generalization relationship models a grouping of things that share common characteristics. 
 
True    False

15.

An aggregation relationship is a form of generalization relationships. 
 
True    False

16.

Associations can indicate the roles that one Class takes in its business relationship with another Class. 
 
True    False

17.

A database should have exactly the same number of tables as there are Classes in the Unified Modeling Language (UML) Class diagram from which the database is developed. 
 
True    False

18.

When building a database from Unified Modeling Language (UML) Class diagrams, each instance of each Class becomes a row in the corresponding table. 
 
True    False

19.

Obligatory business rules state what should not occur. 
 
True    False

20.

Business rules set criteria for branching in activity models. 
 
True    False


Multiple Choice Questions

21.

Which of the following is not something a model of database structures must be able to describe? 
 

A.  The entities or things in the domain of interest

B.  The sequence that entities are accessed

C.  The cardinalities that describe how many instances of one entity can be related to another

D.  The attributes or characteristics of the entities and relationships

22.

Which of the following would be least likely to be represented with a Unified Modeling Language (UML) Class? 
 

A.  Trucks

B.  The number of trucks used in the delivery

C.  The employee driving the truck

D.  The customer receiving the delivery

23.

Which of the following is the best description of an association? 
 

A.  A group of classes

B.  The lines in a UML Class diagram

C.  The relationship between two classes

D.  The number of times one class is related to another

24.

Which of following are possible options for minimum multiplicities? 
 

A.  0 and 1

B.  0 and *

C.  * and 1

D.  0, 1, and *

25.

Which of the following best describes the purpose of a primary key? 
 

A.  Allows linking two or more tables

B.  Indicates the minimum multiplicities for an association

C.  Matches values of foreign keys in other classes

D.  Uniquely identifies each instance of the class

26.

Which of the following statements about foreign keys is not true? 
 

A.  A foreign key can be a combination of attributes.

B.  A foreign key cannot be NULL.

C.  Foreign key must match values of the linked primary key.

D.  Foreign keys support a defined association.

27.

Which of the following is not a criterion for selection of a primary key? 
 

A.  The primary key cannot be NULL (blank).

B.  The primary key should be controlled by the organization assigning it.

C.  Primary keys with sequential values make it easier to spot gaps in the data.

D.  Longer key values are better than shorter key values.

28.

Which of the following is not a best practice in preparing Unified Modeling Language (UML) Class diagrams? 
 

A.  Opt for simplicity.

B.  Model each process separately.

C.  Avoid crossing lines whenever possible.

D.  Avoid confusing abbreviations.

29.

Which of the following is not a step in using a Unified Modeling Language (UML) Class model to prepare a database? 
 

A.  Map Classes to Tables.

B.  Map Attributes to Table Fields.

C.  Map Associations to Primary Keys.

D.  Map Associations to Foreign Keys.

30.

Which of the following is not a form of business rules? 
 

A.  Compulsory

B.  Obligatory

C.  Prohibited

D.  Allowed

31.

Which of the following is a well-formed business rule? 
 

A.  Customers must be over 18 years of age.

B.  Customers may not be under 18 years of age.

C.  Customers must pay in U. S. dollars.

D.  All of these are well-formed business rules.

32.

Entity-relationship diagrams (ERDs) are similar in content and purpose to Unified Modeling Language (UML) Class diagrams. Which of the following is not a basic building block of ERDs? 
 

A.  Relationships

B.  Associations

C.  Attributes

D.  Entities

33.

Consider an association between a Customers class and a Sale class in a Unified Modeling Language (UML) Class diagram. The multiplicities next to the Customers class are 1..1 and the multiplicities next to the Sale class are 0..*. Which of the following is the best way to implement that association in your database? 
 

A.  Post the primary key of Customers as a foreign key in Sales.

B.  Post the primary key of Sales as a foreign key in Customers.

C.  Create a linking table.

D.  None of the above.

34.

Consider an association between a Sales class and an Inventory class in a Unified Modeling Language (UML) Class diagram. The multiplicities next to the Sales class are 0..* and the multiplicities next to the Inventory class are 1..*. Which of the following is the best way to implement that association in your database? 
 

A.  Post the primary key of Sales as a foreign key in Inventory.

B.  Post the primary key of Inventory as a foreign key in Sales.

C.  Create a linking table.

D.  None of the above.

35.

Consider an association between a Cash Disbursements class and a Cash Accounts class in a Unified Modeling Language (UML) Class diagram. The multiplicities next to the Cash Disbursements class are 0..* and the multiplicities next to the Cash Accounts class are 1..1. Which of the following is the best way to implement that association in your database? 
 

A.  Post the primary key of Cash Disbursements as a foreign key in Cash Accounts.

B.  Post the primary key of Cash Accounts as a foreign key in Cash Disbursements.

C.  Create a linking table.

D.  None of the above.

36.

Consider an association between a Pet Owners class and a Pets class in a Unified Modeling Language (UML) Class diagram. The multiplicities next to the Pet Owners class are 1..1 and the multiplicities next to the Pets class are 1..*. Which of the following is the best way to implement that association in your database? 
 

A.  Post the primary key of Pet Owners as a foreign key in the Pets.

B.  Post the primary key of Pets as a foreign key in Pet Owners.

C.  Create a linking table.

D.  None of the above.

37.

Consider an association between a Cities class and a Neighborhoods class in a Unified Modeling Language (UML) Class diagram. The multiplicities next to the Cities class are 1..1 and the multiplicities next to the Neighborhoods class are 1..*. Which of the following is the best way to implement that association in your database? 
 

A.  Post the primary key of Cities as a foreign key in Neighborhoods.

B.  Post the primary key of Neighborhoods as a foreign key in Cities.

C.  Create a linking table.

D.  None of the above.

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