Week 7 Class Diagrams Flashcards
Domain models are ____
solution-independent
platform independent
platform specific
solution independent
desgin models are ____
solution-independent
platform independent
platform specific
platform independent
implementation models are ____
solution-independent
platform independent
platform specific
platform specific
What are domain models
solution independent descriptions of a problem domain
what are design models
platform independent which model different solutions in design (design choices)
what are implentation models
once you have chose a design, different ways of implenting that design
what is the heirarchy of domain models, design models, and implentation models
One domain model
Many diff design models which are seperate design choices
For each design model, different ways of implementing
What phase and workflow of RUP are class models done in?
Phase: Elaboration
Worflow: Requirements
What do class diagram show
Structure of the system at rest (static)
- things in the system and how theyre described and inter-related
What are class diagrams used in requirements and analysis to show
the problem domain structure
what are 2 types of class diagrams
domain class diagram
design class diagram
What are class diagrams used in design to show
solution structure
what is a class diagram in design called
design class diagram
what is a class diagram in requirements modeling and analysis called
conceptual model
or
domain model
is this a Conceptual (Domain) class or a Design class
Conceptual (domain)
is this a Conceptual (Domain) class or a Design class
Design class
what is camelback notation
getAttribute()
notice capitalization
When do boxes not have a one to many (or something like that) on their associations
When it is a Generalization/Specialization, like this
on a link between 2 boxes, what is the notation for generalization/specialization
what does 0..1 mean
Optional 1
what does 1..1 mean or just 1
Mandatory 1
what does 0..* mean (same as 0..n or *)
Optional many
what does 1..* mean (same as 1..n)
mandatory many
what does this relationship in english mean
A course section is for exactly one course
A course has 0 to many course sections
what is the application box called?
Association class
how is Object oriented inheiritance modeled
With generalization/specialization heiarcy.
No multiplicities
Arrow w/ closed arrowhead pointing to superclass
how is bidirectional association modeled with symbols
solid line w/ no arrowhead
how is bidirectional association modeled with multiplicities
mutliplicities on both ends of line
how is bidirectional association labeled in a model
with a single verb phrase or two roles names
when is an association class needed
if association is many to many AND we need to keep data about the association
What is aggregation
Whole-part relationship
what object is aggregation modeled with on the diagram
Diamond on the aggregate side of the relationship
do aggregations have labels and multiplicities
no labels
yes multiplicities are needed (at least on component side, but can be on both)
what is composition
strong form of aggregation
How many aggregate objects can the component object be a part of
one
Does the component object exist if the aggregate object is deleted
no
what happens when an aggregate is deleted
all the components must be deleted
can the component exist outside of the aggregate
no
what is this an example of
composition
When turning use case diagrams into a class diagram, when do you turn an actor into a class?
if the sys needs to track info about the actor
in class diagrams, can multiple roles(actors) be captured by one class?
yes
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
What are possible classes from this
When creating class diagrams, what do verbs in usecase names indicate
Candidate behaviors
When creating class diagrams, when do verbs in usecase names not indicate candidate behaviors
the verb is “view” or “get”
or associations
or values of an attribute
or if translated into a noun, a class
When creating class diagrams, what can basic flow of events and alternate flows help you determine
clues about attributes and behavior
what are some behaviors of classes in this?
What do business forms do?
capture info about a business transaction or event
should classes have the word “form” in them
no
does a business transaction(form) correspond to one or many classes in a class diagram?
one or many
If your system generates a report, when does it need a corresponding class?
if you need to store data about the report
eg. date, pdf_file, requester
