SCENARIO

DEFINITION

Scenarios describe dynamic, time-related interactions between elements: Operational Entities and Actors, the System itself, the System Components. These interactions are expressed through temporally ordered Sequence Messages.

Scenarios illustrate Capabilities. For example, they are useful to describe

• How Operational Entities and Actors cooperate, and how Operational Processes are chained
• How the System is used under operational conditions, how it interacts with external Systems and Users
• Use Cases of the system
• Dynamic behavior of the system (either expected or designed): dynamicity, order, Modes & States evolutions. etc.
• Non functional constraints or situations: performance expectations (latency...), safety failure scenarios, security attacks...

ICONS