5 Questions
What does an object represented by a box shape with an underlined title in a UML SSD model?
A black box, representing the system as a whole
What do stick figures typically represent in a UML SSD?
Entities that interact with the system
What is represented by a dashed line in a UML SSD?
A lifeline, representing events in the system
What can a lifeline in a UML SSD begin with?
A labeled rectangle shape or an actor symbol
What is NOT true about an actor in a UML SSD?
An actor is part of the system
Study Notes
Notations in SSD
- A box shape with an underlined title represents a class or object in UML, modeling the system as a black box (a system with internal workings that are not immediately visible).
Actors in SSD
- Actors are entities that interact with the system, but are external to it.
- Actors are represented by stick figures.
Events in SSD
- Events are system events generated by actors in a sequence.
- A dashed line, known as a lifeline, represents events in an SSD.
- Lifelines may begin with a labeled rectangle shape or an actor symbol.
Learn about SSD notations in UML, including objects, actors, and events. This quiz covers the basics of SSDs, including modeling systems as black boxes and representing events with lifelines.
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