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Thread: UML: Use Case (extends or includes)??

  1. #1
    Mr T Guest

    UML: Use Case (extends or includes)??


    hi, I need help with when to use includes or extends in UML use cases; using
    the following use cases examples: Copy File, Delete File and Move File.
    for Copy File, a copy of the file is made then placed in another location.
    for Move File, a copy of the file is made then placed in another location,
    the original file is then deleted (i.e Delete File use case).
    will Move File include or extend Copy File and Delete File???

    thanx

  2. #2
    Addinquy Guest

    Re: UML: Use Case (extends or includes)??


    "Mr T" <takinyan@hotmail.com> wrote:
    >
    >hi, I need help with when to use includes or extends in UML use cases; using
    >the following use cases examples: Copy File, Delete File and Move File.
    >for Copy File, a copy of the file is made then placed in another location.
    >for Move File, a copy of the file is made then placed in another location,
    >the original file is then deleted (i.e Delete File use case).
    >will Move File include or extend Copy File and Delete File???
    >
    >thanx


    It's an includes relationship.
    Includes means : I use a use case as a "sub routine".
    Extends means : This use case is an optional case of the base use case.

    Take care of the dependency direction of each relationship. It's far from
    natural ...

    regards,

    Christophe


  3. #3
    Aurene Guest

    Re: UML: Use Case (extends or includes)??


    Will extend Copy File but include Delete File

    "Mr T" <takinyan@hotmail.com> wrote:
    >
    >hi, I need help with when to use includes or extends in UML use cases; using
    >the following use cases examples: Copy File, Delete File and Move File.
    >for Copy File, a copy of the file is made then placed in another location.
    >for Move File, a copy of the file is made then placed in another location,
    >the original file is then deleted (i.e Delete File use case).
    >will Move File include or extend Copy File and Delete File???
    >
    >thanx



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