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Use Case Diagrams

Date Added January 1, 1970 | Print | Bookmark
Use-case diagrams shows interaction between a user (human or machine) and the system.
Use case diagrams describe the functionality of the new system that you are going build.


Actor: An actor typically represents a user or another system that will interact with the system.
Use case: Use case is a set of scenarios that complete a task. One Use case can include or extend to another Use case
Association: Relations between an actor and a Use case and a Use case if self.
Boundary: Is a scope boundary of the set of use cases

When to use?

Use cases should be used in analysis phase, requirements gathering & analysis and project planning.
For domain modeling.

Who develops it?

Domain Experts.


Following example shows patient appointment booking functionality.

Further readings:

Writing Effective Use Cases -- Alistair Cockburn
UML Distilled -- Martine Fowler
The Unified Modeling Language User Guide --Grady Booch , James Rumbaugh , Ivar Jacobson

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Category: UML (Unified Modelling Language)

Last updated on January 1, 1970 with 3431 views

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