2. Scenario - Definition
• sequence of processing steps
• to be executed under certain circumstances
• defined goal
• begins with a triggering event
• ends by completing task successfully or
failing
3. Scenario - Definition (2)
• can document business processes (n : 1)
• visualization of a specific execution instance of the
respective business process
• two fundamental description categories
• successful execution of a process
• failed execution of a process
4. UML - Visualization of
dynamic activities
• Object Diagram
• system snapshot on object level, not suitable for
modeling scenarios
• Communication Diagram (formerly known as
Collaboration Diagram)
• models object collaboration during operation
execution
• Sequence Diagram
• precise depiction of chronological execution order
5. Sequence Diagram
• precise description of activities
• permits for discussion of technical correctness
• suitable as means for design and
implementation communication
• emphasizes chronological aspect of dynamic
behavior
6. Sequence Diagram -
Components
Object
objName : ClassName
life line
X
end of life