[ogsa-wg] Nov 29 - Info Model call minutes

[Sergio Andreozzi]

Ellen Stokes ha scritto:
> Sergio,
>
> One observation on your modified diagram....what do you mean by 'Resource 
> Model'?
>
> In OGSA, we use the terms information model (abstract) and data model 
> (concrete)....we do not use or define resource model since it is an 
> ambiguous term.
>   

yes, Information Model is a better term in that case. GLUE is a possible 
instance. I attach the modified version.

Sergio

> Ellen
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> Sergio Andreozzi <sergio.andreozzi at cnaf.infn.it> 
> Sent by: ogsa-wg-bounces at ogf.org
> 11/29/2007 08:34 AM
>
> To
> Michel Drescher <Michel.Drescher at uk.fujitsu.com>
> cc
> ogsa-wg <ogsa-wg at ogf.org>
> Subject
> Re: [ogsa-wg] Nov 29 - Info Model call minutes
>
>
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> Michel Drescher ha scritto:
>   
>> Folks,
>>
>> the minutes of the first slot of today's call are available online at:
>> https://forge.gridforum.org/sf/go/doc14951?nav=1
>>     
>
> I apologize for having missed the call. I messed up the start time by 
> one hour. Some comments to the minutes:
>
>   
>> Ellen expresses her preference for the "three-bubble-diagram"
>>     
>
> I understand that the new diagram can be too complex for the purpose of 
> the section.
> Coming back to my original OGF comments, the main issue was if we should 
> state, by design, that 
> "advertised capabilities and activity requirements all rely on the same 
> resource description" (maybe optional for the managed instances model).
> This seems to be the way OGF is taking by dropping the JSDL attributes for 
> resource requirements and by moving to XQuery expression against resource 
> representation.
>
> If we agree on this, a new proposal for the diagram that maintains the 
> simplicity but that shows this assumption is attached
>
>
>   
>> The group agrees that the UML diagram should not be discarded, but 
>> a proper place has to be found in the architeture document.
>>     
>
>   
>> Ellen recommends to use Sergio's UML diagram in the same document,
>> for example in chapter 5 or the appendix.
>>     
>
> ok, I will work on this
>
>   
>> Michel has been working with Sergio on modelling guidelines for how
>> to render the GLUE information model into a GLUE XML Schema data model.
>>     
>
>   
>> The rendering and the guidelines are not complete yet, but the 
>>     
> discussions
>   
>> revolve around the usability in XPATH and XQuery expressions.
>>     
>
> the current rendering is aligned with the current GLUE Spec. We can work 
> on adding examples of representation of resources and XQuery/XPath 
> expressions
>
>
>
> Cheers, Sergio
>
>
>
>
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>
>   
>> Cheers,
>> Michel
>>
>> ------------------------------------------------------------------------
>>
>> --
>>   ogsa-wg mailing list
>>   ogsa-wg at ogf.org
>>   http://www.ogf.org/mailman/listinfo/ogsa-wg
>>     
>
>
>   


-- 
Sergio Andreozzi
INFN-CNAF,                    Tel: +39 051 609 2860
Viale Berti Pichat, 6/2       Fax: +39 051 609 2746
40126 Bologna (Italy)         Web: http://www.cnaf.infn.it/~andreozzi

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