10+ Use Case Model Definition. Jacobson has continued to promote this approach to system analysis to the present day, and it has now been. In software and systems engineering, a use case is a list of actions or event steps typically defining the interactions between a role (known in the unified modeling language (uml) as an actor).
They document the functionality of a system. Use case diagrams visualize use cases, actors and relationships. Level 2 use cases must drive out the major model dimensions (static/information model, behavioral model, governance model, etc.).
A use case diagram acts as a focus for the description of user requirements.
10+ Use Case Model Definition. A use case acts as a software modeling technique that defines the features to be implemented and the resolution of any errors that may be encountered. Level 2 use cases must drive out the major model dimensions (static/information model, behavioral model, governance model, etc.). Defining the relationship between two use cases is the decision of the software analysts of the use case diagram. A single use case is described in depth depending on the user's definition, a customer data record may also need to be in existence.