CSE563 Lecture 09

Software Requirements and Specification
Use Case Diagrams
(202202)

Transcript

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   CSE 563
   Software Requirements and Specification
   Lecture 09: Use Case Diagrams
   Dr. Javier Gonzalez-Sanchez
   javiergs@asu.edu
   javiergs.engineering.asu.edu | javiergs.com
   PERALTA 230U
   Office Hours: By appointment
   

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   Note
   

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   Use Case Diagram
   A Graphical Notation
   

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   UML Diagrams
   

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   Diagram
   a) Actors
   b) Use Cases
   a) Relationships
   child father
   base addition
   extension base
   << include >>
   << extend >>
   

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   Diagram | Example
   Nurse
   Medical receptionist
   Manager
   Register
   patient
   View
   personal info.
   View record
   Generate
   report
   Export
   statistics
   Doctor
   Edit record
   Setup
   consultation
   

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   Ideas for secondary actor
   Nurse
   Medical receptionist
   Manager
   Register
   patient
   View
   personal info.
   View record
   Generate
   report
   Export
   statistics
   Doctor
   Edit record
   Setup
   consultation
   

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   Inclusion
   § Show that behavior of the included use case (addition) is inserted into
   the behavior of the including (base) use case.
   § A dashed line with an open arrowhead directed from the including use
   case (base) to the included (addition) use case. The arrow is labeled with the
   keyword «include».
   § The include relationship is used to (1) simplify large use case by splitting it into
   several use cases, (2) extract common parts of the behaviors of two or more
   use cases.
   base addition
   

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   Inclusion
   base
   addition
   

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    Example
    

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    Extension
    § Extending use case defines optional behavior that is not necessarily
    meaningful by itself.
    § Extend relationship is shown as a dashed line with an open arrowhead
    directed from the extending use case to the extended (base) use case.
    The arrow is labeled with the keyword «extend».
    base extension
    

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    Inclusion
    extension
    base
    

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    Example
    

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    What about this?
    

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    What about this?
    

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    Include vs Extends
    

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    Examples
    Use Case Diagrams
    

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    Example
    

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    Example
    

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    Example
    

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    Example
    

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    Example
    http://epf.eclipse.org/wikis/openup/core.tech.common.extend_supp/guidances/examples/uc_model_elaboration_phase_70035F60.html
    

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    Think About This
    

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    From a Student’s Homework – Thoughts?
    

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    Questions
    

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    CSE 563 Software Requirements and Specification
    Javier Gonzalez-Sanchez, Ph.D.
    javiergs@asu.edu
    Fall 2021
    Copyright. These slides can only be used as study material for the class CSE563 at ASU.
    They cannot be distributed or used for another purpose.
    

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