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   Re: [xml-dev] Is XML-REST more scalable than SOAP?

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Uche Ogbuji wrote:
> Wow.  I'm a fan of RDF, but I find this somewhat of a counter-intuitive idea.
> I've always advocated RDF for closed systems and wondered about 
> its scalability in open systems.  

I think that what Roger is really talking about is *interoperability*,
not really scalability (at least not in a performance sense). 

> In the terms you put it, RDF might help the user agent understand 
> the vocabulary more efficiently, as long as the agent has all 
> the data it needs to fully process the RDF.  but if the agent 
> does not, and thus has to hop over to another Web site to 
> fill in a missing piece (maybe a site where an RDF schema or 
> DAML ontology is stored), then has to hop over to yet another 
> site to clarify some missing pieces there, and so on, couldn't 
> this cause all sorts of network congestion, and notable delays 
> in the agent's processing?

If the alternative is having a programmer EXPLAIN the semantics to a
program, this delay will seem slight. ;)

And don't forget about client-side schema/ontology caching.

 Paul Prescod


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