ITM 305 MIDTERM EXAM-TB
notes everything you need for a
solid A
What are the event decomposition steps? - Answer-1) consider external events in ystem
environment thatrequire response
2) for each external event, identify and name use case that system requires
3) consider temporal events that require response from system
4) for each temporal event, identify and name use cases system requires and establish
point of time that will trigger use case
5) consider state events system may respond to, if it is a real-time system
6)for each state event, identify and name the use case that sytem requires and define
state change
7)when events and use cases defined check to see if their required using perfect
technology assumption. dont include events that involve system controls (logout,
change password, backup database.. these done later)
What are benefits of the event decomposition technique - Answer-the events are
broader than user goal technique, it captures temperol events and state events
it uses the perfect technology assumption
What does CRUD stand for? - Answer-Create, Read, Update, Delete
CRUD analysis steps - Answer-1) identify all domain classes
2) for each class verify use cases exist : create new instance, update, read/report,
delete instances
3)add new use cases required, identify possible stakeholders
4) identify which application has responsibility for each action: which to create,
update,which to use
What should typical use cases include? - Answer-use case name, scenario, triggering
event (based on EDT), brief description, actors,relates use cases (<<includes>>),
stakeholders, preconditions (whats true before use case), post-conditions (whats true
after completion), flow of activities (activities go between actor and system), exception
conditions (where/what can go wrong)
workflow - Answer-sequence of processing steps that completely handles one business
transaction or customer request
Activity Diagram - Answer-describes user (or system) activities, the person who does
each activity, and the sequential flow of these activities
, -useful for showing a graphical model
-do not give detail about how objects behave/collaborate
what are components of an activity diagram? - Answer-activity is ongoing -represented
by rounded rectangle, text inside represents activity ( verb past tense)
An event triggered represented by lines
a decision is shown by labeling guard conditions with traditional diamond shape
branch-describes what activities will take place based on a set of conditions
all branches are followed by a merge to indicate the end of the conditional behavior
what are some disadvantages to using activity diagrams? - Answer-they do not explicitly
present which objects execute which activities and the way messaging works between
them
what are some advantages to using activity diagrams? - Answer-usueful for early in
modelling process to help understand overall process
class diagram - Answer-a static diagram used to model static view of a system, static
view described vocabulary of the system. used for construction purposes (object
oriented design, java,c++)
shows collaboration among elements in static view, describes functionalities performed
by a system
problem domain (area) - Answer-the specific area (domain) of the user's business need
that is within the scope of the new system
-area that needs to be examined to solve problem, looking at area of intrest and
excluding everything else
"things" - Answer-those items users work with when accomplishing tasks that need to
be remembered
ex. products, sales, customers, shippers, invoices, payments
-system involves working with and remembering these "things"
-"things"" modelled as domain classes (data entities)
brainstorming technique - Answer-a technique used to identify problem domain classes
in which developers work with users to identify classes by thinking about different types
of things they use in their work
-analyst brainstorms with users types of things used routinely
noun technique - Answer-a technique used to identify things in the problem domain by
finding and classifying the nouns in a dialog or description
-used to describe events, actors, use cases and user story
-good if no user available to brainstorm with, long lists
what are steps to the noun technique? - Answer-1)using use cases, actors and other
info about system identify nouns
notes everything you need for a
solid A
What are the event decomposition steps? - Answer-1) consider external events in ystem
environment thatrequire response
2) for each external event, identify and name use case that system requires
3) consider temporal events that require response from system
4) for each temporal event, identify and name use cases system requires and establish
point of time that will trigger use case
5) consider state events system may respond to, if it is a real-time system
6)for each state event, identify and name the use case that sytem requires and define
state change
7)when events and use cases defined check to see if their required using perfect
technology assumption. dont include events that involve system controls (logout,
change password, backup database.. these done later)
What are benefits of the event decomposition technique - Answer-the events are
broader than user goal technique, it captures temperol events and state events
it uses the perfect technology assumption
What does CRUD stand for? - Answer-Create, Read, Update, Delete
CRUD analysis steps - Answer-1) identify all domain classes
2) for each class verify use cases exist : create new instance, update, read/report,
delete instances
3)add new use cases required, identify possible stakeholders
4) identify which application has responsibility for each action: which to create,
update,which to use
What should typical use cases include? - Answer-use case name, scenario, triggering
event (based on EDT), brief description, actors,relates use cases (<<includes>>),
stakeholders, preconditions (whats true before use case), post-conditions (whats true
after completion), flow of activities (activities go between actor and system), exception
conditions (where/what can go wrong)
workflow - Answer-sequence of processing steps that completely handles one business
transaction or customer request
Activity Diagram - Answer-describes user (or system) activities, the person who does
each activity, and the sequential flow of these activities
, -useful for showing a graphical model
-do not give detail about how objects behave/collaborate
what are components of an activity diagram? - Answer-activity is ongoing -represented
by rounded rectangle, text inside represents activity ( verb past tense)
An event triggered represented by lines
a decision is shown by labeling guard conditions with traditional diamond shape
branch-describes what activities will take place based on a set of conditions
all branches are followed by a merge to indicate the end of the conditional behavior
what are some disadvantages to using activity diagrams? - Answer-they do not explicitly
present which objects execute which activities and the way messaging works between
them
what are some advantages to using activity diagrams? - Answer-usueful for early in
modelling process to help understand overall process
class diagram - Answer-a static diagram used to model static view of a system, static
view described vocabulary of the system. used for construction purposes (object
oriented design, java,c++)
shows collaboration among elements in static view, describes functionalities performed
by a system
problem domain (area) - Answer-the specific area (domain) of the user's business need
that is within the scope of the new system
-area that needs to be examined to solve problem, looking at area of intrest and
excluding everything else
"things" - Answer-those items users work with when accomplishing tasks that need to
be remembered
ex. products, sales, customers, shippers, invoices, payments
-system involves working with and remembering these "things"
-"things"" modelled as domain classes (data entities)
brainstorming technique - Answer-a technique used to identify problem domain classes
in which developers work with users to identify classes by thinking about different types
of things they use in their work
-analyst brainstorms with users types of things used routinely
noun technique - Answer-a technique used to identify things in the problem domain by
finding and classifying the nouns in a dialog or description
-used to describe events, actors, use cases and user story
-good if no user available to brainstorm with, long lists
what are steps to the noun technique? - Answer-1)using use cases, actors and other
info about system identify nouns
