TMCL Requirements and Use Cases: constraint 4.1.2.U4.(c)

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Hi there,

In TMCL Requirements and Use Cases, the constraint 4.1.2.U4.(c) says "Topic
T can be used for typing subject indicator". Is this true? I don't think so.
:) As Lars said below, "... subject indicators don't have types...".
Regards,

------------------------------------ 
Giovani Rubert Librelotto 
Ph.D. Student - Informatics Department
Universidade do Minho 
Braga - Portugal 
[email protected] 
 
> Message: 2
> To: [email protected]
> Subject: Re: [tmcl-wg] Doubts in TMCL Requirements
> From: Lars Marius Garshol <[email protected]>
> Date: Thu, 26 Feb 2004 23:43:26 +0100
> Reply-To: [email protected]
> 
> 
> | 4.1.2.U3. Valid subject indicator
> | ---------------------------------
> | (b). Topic of type T must have one subject indicator.
> | Example: Topic of type project must have at least one subject 
> | indicator no matter what the value is.
> | 
> | (c). Topic of type T must have a subject indicator in scope S.
> | Example: Topic of type person must have a subject indicator 
> in scope 
> | social-security-number.
> | 
> | (d). Topic of type T must have a subject indicator of type O.
> | Example: Topic of type country must have a subject 
> indicator of type map.
> | 
> | ==> Please, could you give me short XTM examples for this 
> three cases? 
> | For each use case, a valid topic and a invalid one.
>  
> 
> Here's an invalid topic according to example (b)
> 
>   <topic id="foo">
>     <instanceOf>
>       <topicRef xlink:href="#project"/>
>     </instanceOf>
>   </topic>
> 
> and here's one that is valid:
> 
>   <topic id="bar"/>
>     <instanceOf>
>       <topicRef xlink:href="#project"/>
>     </instanceOf>
> 
>     <subjectIdentity>
>       <subjectIndicatorRef xlink:href="http://www.example.com/#bar"/>
>     </subjectIdentity>
>   </topic>
> 
> 
> --- (c)
> 
> This one makes no sense. Subject indicators don't have scope, 
> so this can't be done. (I guess this might have been one 
> reason you were confused by these. :-)
> 
> 
> --- (d)
> 
> This one makes no sense, either, since subject indicators 
> don't have types, either. (Another reason you were confused, 
> I suppose.)
> 
> Does this help?
> 
> -- 
> Lars Marius Garshol, Ontopian         <URL: http://www.ontopia.net >
> GSM: +47 98 21 55 50                  <URL: 
> http://www.garshol.priv.no >

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