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

[Ellen Stokes]

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.

Ellen





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






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







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

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