Interaction Diagrams Flashcards
(21 cards)
What are the two types of interaction diagrams
activity diagram
sequence diagram
what is the function of interaction diagrams
to model the dynamic aspects of the information system
function of an activity diagram
presents the workflow of the process
describes how activities are co ordinated
lines connecting activities in an activity diagram are called what
transitions
what is a branch in an activity diagram
when a transition branches into two or more mutually exclusive transitions
what is a fork in an activity diagram
when a transition splits into two or more parallel activities and join again after
what is a swimlane in an interaction diagram
determines which activity is responsible for each activity
how are guard expressions shown
in side square brackets []
what is a join in an interaction diagram
like a fork but two into one
interaction diagrams beginning point is shown how
filled in circle
how is a branch shown in interaction diagram
hollow diamond, splits from there
how are forks and joins shown in an interaction diagram
bold lines
how is the end of an interaction diagram shown
black circle surrounded by hollow circle
what is the function of a sequence diagram
an interaction diagram that shows how operations are carried out
how are sequence diagrams organised
according to time, time progresses as you go down the page
what does a lifeline look like in a sequence diagram
vertical dotted line
what does the lifeline show
the amount of time that the object is in existence
if a class no longer exists after the activity, how is the end of the lifeline shown
an x
each arrow in the sequence diagram is called the
message call
what does the activation bar show
represents the duration of the execution of the message
where to put return values in sequence diagrams
above the dotted line
