Beginners Guide to Model-Based Systems Engineering

12/18/2018

Building a Bridge to Behavior: Leveraging Use Cases

• Describe the functionality of a system from the user perspective • Represent the highest level of functional abstraction for a system • Elicit requirements or bridge to (elaborated by) system threads • Represent the interactions between the system and external “actors” • Emphasizes functionality rather than control or timing • Implicit is the discovery of functional requirements • Should reflect

• Pre-conditions • Post-conditions • Primary flow • Exception flows

81

Identifying Geospatial Library Use Cases

82

41