Chapter 3 MC

When implementing the database from a UML class diagram, attributes should be mapped to which of the following? a. Tables b. Indexes c. Fields d. Relationships

Fields

When implementing the database from a UML class diagram, associations should be mapped to which of the following? a. Relationships b. Fields c. Foreign keys d. Tables

Foreign keys

Which of the following is not a criterion for selection of primary key? a. They primary key cannot be NULL 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 short key values

Longer key values are better than short key values

Which of the following is not a step in using a Unified Modeling Language (UML) Class model to prepare a database? a. Map Associations to Foreign Keys b. Map Classes to Tables c. Map Associations to Primary Keys d. Map Attributes to Table Fields

Map Associations to Primary Keys

Which of the following is not a best practice in preparing Unified Modeling Language (UML) Class diagrams? a. Opt for simplicity b. Avoid confusing abbreviations c. Model each process separately d. Avoid crossing lines whenever possible

Model each process separately

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. Create a linking table c. Post the primary key of Cash Accounts as foreign key in Cash Disbursements d. None of the options are correct

Post the primary key of Cash Accounts as foreign key in Cash Disbursements

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. Create a linking table b. Post the primary key of neighborhoods as a foreign key in cities c. Post the primary key of Cities as a foreign key in Neighborhoods d. None of the options are correct

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

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. Create a linking table c. Post the primary key of Sales as a foreign key in Customers d. None of the options are correct

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

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. Create a linking table b. Post the primary key of Pet Owners as a foreign key in Pets c. Post the primary key of Pets as a foreign key in Pet Owners d. None of the options are correct

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

Consider an association between a Deliveries class and a Shipping Companies class in a Unified Modeling Language (UML) Class diagram. The multiplicities next to the Deliveries class are 0..* and the multiplicities next to the Shipping Companies class are 1..1. Which of the following is the best way to implement that association in your database? a. Create a linking table b. Post the primary key of Shipping Companies as a foreign key in Deliveries c. Post the primary key of Deliveries as a foreign key in Shipping Companies d. None of the options are correct

Post the primary key of Shipping Companies as a foreign key in Deliveries

Which of the following is not a valid enforcement level for business rules? a. Strict enforcement b. Pre-override c. Authorization d. Post-override

Authorization

Which of the following are possible options for minimum multiplicities? a. 0 and 1 b. 0, 1, and * c. * and 1 d. 0 and *

0 and 1

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

A foreign key cannot be NULL

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. Associations b. Entities c. Attributes d. Relationships

Associations

Which of the following is a well-formed business rule? a. Customers may not be under 18 years of age b. Customers must be over 18 years of age c. Customers may pay in U.S. dollars d. All of these are well-formed business rules

All of these are well-formed business rules

Which of the following is not a form of business rules? a. Prohibited b. Compulsory c. Allowed d. Obligatory

Compulsory

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. Create a linking table b. Post the primary key of inventory as a foreign key in Sales c. Post the primary key of Sales as a foreign key in Inventory d. None of the options are correct

Create a linking table

Consider an association indicating professional licensing status between an Accountant class and a States class in a Unified Modeling Language (UML) Class diagram. The multiplicities next to the Accountants class are 0..* and the multiplicities next to the States class are 0..*. Which of the following is the best way to implement that association in your database? a. Post the primary key of States as a foreign key in Accountants b. Post the primary key of Accountants as a foreign key in States c. Create a linking table d. None of the options are correct

Create a linking table

Which of the following is not a category of operational decision used in creating business rules? a. Event b. Calculation c. Opportunity d. Risk

Event

Which of the following is not one of the building blocks used for creating UML Class diagrams? a. Events b. Classes c. Associations d. None of the other options are used in UML Class Diagrams

Events

Consider an association between a Cash Disbursements class and a Vendors class in Unified Modeling Language (UML) Class diagram. The multiplicities next to the Cash Disbursements class are 0..* and the multiplicities next to the Vendors 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 Vendors as a foreign key in Cash Disbursements b. Create a linking table c. Post the primary key of Cash Disbursements as a foreign key in Vendors d. None of the options are correct

Post the primary key of Vendors as a foreign key in Cash Disbursements

Associations in UML Class Diagrams should include a description in which of the following situations? a. The decision criterion affecting the process flow direction is not clear b. Associations should always include descriptions c. The attributes of the related class are not clear d. The business purpose of the association is not clear

The business purpose of the association is not clear

Logical database structure models, including UML Class diagrams, must be able to describe which of the following? a. The activities performed in the business process b. The Bachman diagram c. The entities in the domain of interest d. The operations performed on the database

The entities in the domain of interest

Which of the following would be least likely to be represented with a Unified Modeling Language (UML) Class? a. The number of trucks used in the delivery b. Trucks c. Customer receiving the delivery d. The employee driving the truck

The number of trucks used in the delivery

Which of the following is most similar to the relationship between the UML class diagram and the database? a. The relationship between cooking instructions and ingredients b. The relationship between a blueprint and building c. The relationship between raw materials and finished goods d. The relationship between driving directions and a map

The relationship between a blueprint and building

Which of the following is the best description of an association? a. The relationship between two classes b. A group of classes c. The lines in an UML Class diagram d. The number of times one class is related to another

The relationship between two classes

Which of the following is not something a model of database structures must be able to describe? a. The cardinalities that describe how many instances of one entity can be related to another b. The entities or things in the domain of interest c. The sequence that entities are accessed d. The attributes or characteristics of the entities and relationships

The sequence that entities are accessed

Which of the following best describes the purpose of a primary key? a. Allows linking two or more tables b. Uniquely identifies each instance of the class c. Indicates the minimum multiplicities for an association d. Matches values of foreign keys in other classes

Uniquely identifies each instance of the class