5.2 Flashcards
Modelling user _________ is important because it helps identify user reqs
interactions
Modelling system to system _________ is important because it highlights _______ problems that may arise
interactions, communication
Modelling component _________ is important because it help too confirm if it will deliver the required ________ and dependability
interactions, performance
____ _____ modelling is used to model interactions between a system and external actors
use case
Sequence diagrams are used to model…
interactions between system components
_____ ____ models and _______ diagrams present interaction at different levels of detail
use case, sequence
A use case is a simple ______ that describes what a user expects from the system
scenario
A use case represents a ______ task that involves external interaction with a system
discrete
A use case is shown as a _______ and the ______ are stick figures
ellipse, actors
A use case must be supplemented with a ______ description, _________ description in a table, or a ______ diagram
textual, structure, sequence
A sequence diagram shows…
the sequence of interactions that take place during a particular use case or use case instance
In a sequence diagram, _____ and _____ are listed along the top of the diagram, with a dotted line drawn vertically from these
objects, actors
In a sequence diagram, arrows indicate the _______ between objects
interaction
In a sequence diagram, the ________ on the dotted lines indicates the lifeline of the object
rectangle
In a sequence diagram, the ______ on the arrow describe the calls to the objects, their parameters, and return values
annotations
