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Actor
CREATED BY , CREATIVE COMMONS LICENSEDragon1 Definition for
Actor:
An actor is an entity that is a participant in a process, like a person, animal, plant, robot, application, organization, or system. An actor can be internal or external to the system interacting with other entities.
What is an actor? An actor is an entity that is a participant in a process, like a person, animal, plant, robot, application, organization, department, or system. An actor can be internal or external to the system interacting with other entities.
For example Students using a Campus Webshop are Actors and have the role of Shopper. Or People ordering in a Restaurant their dinner are Actors and have the role of Client.
When you model an actor, it is not common to model also the entity it embodies. Sometimes, for the sake of understandability, it is wise to do so. If you model a process and use lanes, these lanes represent the roles that actors have.
The shape for Actor is a wireframe person:
'Actor' has important relationships with 'Role' and 'Responsibility'.
Types of Actor
Common types of actor are:
- Business Actor
- Process Actor
- System Actor
Actors in Use Case Diagram
An actor has roles because of his position in a process. An actor is expected to perform certain tasks, being the responsibilities of their roles.
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