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Guideline (Beginner,Concept) Model a human or system as a resource only if you want to ignore their goals and intentions. Open Version
Discussion: An Actor is an entity that performs an activity or an action. If the Depender depends on an entity to perform a task, action, or activity to fulfill, satisfy, accomplish, or achieve a goal, then that entity is modeled as an Actor, not a Resource. In the supplied example, “Online Payment System” and “Telecom Technician” are not passive deliverables, but active elements that performs action within the overall model. Therefore, they need to be modeled as some type of actors. Moreover, the modeler decides if it is useful to model the Goals and intentions of the “Telecom technician”, for example, then it should be an Actor, otherwise, in a simplified model, it could be a resource.
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