Week 7 Class Diagrams

Question 1

Domain models are ____

solution-independent

platform independent

platform specific

Answer 1

solution independent

Question 2

desgin models are ____

solution-independent

platform independent

platform specific

Answer 2

platform independent

Question 3

implementation models are ____

solution-independent

platform independent

platform specific

Answer 3

platform specific

Question 4

What are domain models

Answer 4

solution independent descriptions of a problem domain

Question 5

what are design models

Answer 5

platform independent which model different solutions in design (design choices)

Question 6

what are implentation models

Answer 6

once you have chose a design, different ways of implenting that design

Question 7

what is the heirarchy of domain models, design models, and implentation models

Answer 7

One domain model

Many diff design models which are seperate design choices

For each design model, different ways of implementing

Question 8

What phase and workflow of RUP are class models done in?

Answer 8

Phase: Elaboration

Worflow: Requirements

Question 9

What do class diagram show

Answer 9

Structure of the system at rest (static)

• things in the system and how theyre described and inter-related

Question 10

What are class diagrams used in requirements and analysis to show

Answer 10

the problem domain structure

Question 11

what are 2 types of class diagrams

Answer 11

domain class diagram

design class diagram

Question 12

What are class diagrams used in design to show

Answer 12

solution structure

Question 13

what is a class diagram in design called

Answer 13

design class diagram

Question 14

what is a class diagram in requirements modeling and analysis called

Answer 14

conceptual model

or

domain model

Question 15

is this a Conceptual (Domain) class or a Design class

Answer 15

Conceptual (domain)

Question 16

is this a Conceptual (Domain) class or a Design class

Answer 16

Design class

Question 17

what is camelback notation

Answer 17

getAttribute()

notice capitalization

Question 18

When do boxes not have a one to many (or something like that) on their associations

Answer 18

When it is a Generalization/Specialization, like this

Question 19

on a link between 2 boxes, what is the notation for generalization/specialization

Answer 19

Question 20

what does 0..1 mean

Answer 20

Optional 1

Question 21

what does 1..1 mean or just 1

Answer 21

Mandatory 1

Question 22

what does 0..* mean (same as 0..n or *)

Answer 22

Optional many

Question 23

what does 1..* mean (same as 1..n)

Answer 23

mandatory many

Question 24

what does this relationship in english mean

Answer 24

A course section is for exactly one course

A course has 0 to many course sections

Question 25

what is the application box called?

Answer 25

Association class

Question 26

how is Object oriented inheiritance modeled

Answer 26

With generalization/specialization heiarcy.

No multiplicities

Arrow w/ closed arrowhead pointing to superclass

Question 27

how is bidirectional association modeled with symbols

Answer 27

solid line w/ no arrowhead

Question 28

how is bidirectional association modeled with multiplicities

Answer 28

mutliplicities on both ends of line

Question 29

how is bidirectional association labeled in a model

Answer 29

with a single verb phrase or two roles names

Question 30

when is an association class needed

Answer 30

if association is many to many AND we need to keep data about the association

Question 31

What is aggregation

Answer 31

Whole-part relationship

Question 32

what object is aggregation modeled with on the diagram

Answer 32

Diamond on the aggregate side of the relationship

Question 33

do aggregations have labels and multiplicities

Answer 33

no labels

yes multiplicities are needed (at least on component side, but can be on both)

Question 34

what is composition

Answer 34

strong form of aggregation

Question 35

How many aggregate objects can the component object be a part of

Answer 35

one

Question 36

Does the component object exist if the aggregate object is deleted

Answer 36

no

Question 37

what happens when an aggregate is deleted

Answer 37

all the components must be deleted

Question 38

can the component exist outside of the aggregate

Answer 38

no

Question 39

what is this an example of

Answer 39

composition

Question 40

When turning use case diagrams into a class diagram, when do you turn an actor into a class?

Answer 40

if the sys needs to track info about the actor

Question 41

in class diagrams, can multiple roles(actors) be captured by one class?

Answer 41

yes

Question 42

When turning use case diagrams into a class diagram, when do you turn a direct object in usecase name into a class, what do you look for

Answer 42

Question 43

What are possible classes from this

Answer 43

Question 44

When creating class diagrams, what do verbs in usecase names indicate

Answer 44

Candidate behaviors

Question 45

When creating class diagrams, when do verbs in usecase names not indicate candidate behaviors

Answer 45

the verb is “view” or “get”

or associations

or values of an attribute

or if translated into a noun, a class

Question 46

When creating class diagrams, what can basic flow of events and alternate flows help you determine

Answer 46

clues about attributes and behavior

Question 47

what are some behaviors of classes in this?

Answer 47

Question 48

What do business forms do?

Answer 48

capture info about a business transaction or event

Question 49

should classes have the word “form” in them

Answer 49

no

Question 50

does a business transaction(form) correspond to one or many classes in a class diagram?

Answer 50

one or many

Question 51

If your system generates a report, when does it need a corresponding class?

Answer 51

if you need to store data about the report

eg. date, pdf_file, requester