Lecture from my Systems Engineering class
Scenario = description of behaviour
How are functional qualities and TPMs related?
With TPMs you measure the functional qualities
What does a black-box diagram describe?
A functional and abstract view.

System Context Diagram
scoping, interfaces, constraints
As a Systems Engineer, I need to decide on which actors should be included in the Context Diagram.
What is the use of specifying interfaces?
- what
- how
- when
- who Specifying interfaces puts constraints on the S.U.D. or on the environment.
Requirements
- are traditionally divided into function and non-functional.
Non-functional requirements are always constraints. A special type of constraint is an interface requirement.
Every arrow in the black box could give requirements.
Stakeholders needs → system requirements, behaviour