I couldn't agree more.
I recommend, that when documenting use cases, initially ignore that the
'includes' and 'extends' associations exist.
It's after you become to realise that you are repeating the same or similar
functionality, over and over, then you may want to go back and consider
adding 'extended' or 'included' use cases to your model.
Don't look for them. Let them find you.
Les.
Jason makes a good point that the <<include>> and <<extend>> relationships
should be used with great care! Note that <<extend>> does not denote
specialisation, the UML generalisation relationship is a valid and useful
relationship between use cases for this concepts, and it is supported in
Rose.
regards
anthony
> -----Original Message-----
> From: Jason Gorman [mailto:[EMAIL PROTECTED]]
> Sent: 02 January 2001 15:11
> To: Prabhusivakumar
> Cc: [EMAIL PROTECTED]
> Subject: RE: (ROSE)Association and Dependency in UseCases
>
>
>
> Who knows? <<includes>> denotes aggregation of use cases (one
> use case is
> part of another use case) and <<extends>> denotes
> specialisation (one use
> case is a special case of another). You have to be very
> careful how you use
> these, in much the same way as you must be with classes.
> Having said that,
> try building a class model with just loose dependancies and
> no associations!
>
> Jason Gorman
> http://www.xml-objects.com
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Prabhusivakumar
> Sent: 02 January 2001 08:47
> To: '[EMAIL PROTECTED]'
> Subject: (ROSE)Association and Dependency in UseCases
>
>
>
> Hi,
> Rational tells to use "Unidirectional Association" with stereo type as
> <<includes>> or <<extends>> between usecases.
> But as per Booch this is a "dependency". I also agree with
> Booch because if
> there is a change in the included usecase the main usecase is
> bound to get
> affected.
> But why still Rational recommends the use of Unidirectional
> Association??
>
> Prabhu
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