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3.
Relationships (Dependencies, Extensions, Associations and
Inheritance)
Image 2.3 Use Case Diagram
(Source: System Analysis and Design Method – Whitten and Bentley,
2007)
There are 5 different kinds of relations in use case diagram that have
different purposes, which are:
1.
Association
Association is a relationship which shows interaction among
actor and use case. An association relation has arrowhead means
actor communicates or interacts with the use case directly. On
the other hand, an association relation that doesn’t have any
arrowhead indicates actor interacts with use case indirectly.
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