Icon class icon_class fas fa-quote-left icon_class_computed fas fa-quote-left Related content Webel: MBSE: SysMLv1: Prefer a custom «actor» extension of a Block (such as the non-normative External) over UML-style Actor for use as parts in IBDs and on allocation swimlanes. You can also have a Trace from a block-based «actor» to a UML-style Actor. Source OMG Systems Modeling Language (SysML) 1.7beta1 Copyright information About Object Management Group copyright in text extracts quoted from OMG specifications for educational purposes Snippet kind INFO UML keywords Actor UseCase::subject UseCase Previous snippet Full quote The use case diagram describes the usage of a system (subject) by its actors (environment) to achieve a goal, that is realized by the subject providing a set of services to selected actors. Next snippet Related snippets An Actor specifies a role played by a user or any other system that interacts with the subject. A UseCase specifies a set of actions performed by its subjects, which yields an observable result that is of value for one or more Actors or other stakeholders of each subject. A Stakeholder stereotype can only be applied to UML::Actor or UML::Class which are not a UML::Association. A UseCase may apply to any number of subjects. When a UseCase applies to a subject, it specifies a set of behaviors performed by that subject, which yields an observable result that is of value for Actors or other stakeholders of the subject. Related snippets (backlinks) Visit also Visit also (backlinks) Flags
