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   Re: [xml-dev] Re: XML and the Relational Model

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On Mon, 2003-08-25 at 14:18, lbradshaw@dbex.com wrote:

> For sure, people are trying to do terabyte systems that integrate 
> normalized data and legacy document data stores (such as the journal 
> "Nature"), primarily in XML, that is to say by converting out of an RDBMS 
> like Oracle and into pure XML docs without a dbms back end. This is the 
> source of my concern. They need some guidance, and will certainly receive 
> it, in one form (gentle comments in forums like this one) or another (when 
> their systems fail in production, or worse, never get past failed prototype 
> constructs).

Do you notice that this is a primarily a TEXT!!!! system. Sure the
metadata will go into Oracle nicely, but if what you care about are the
articles, it sure sounds plausible to me that one would use a storage
system optimized for the articles, and then shoehorn in the metadata,
rather than use an RDBMS and shoehorn in the corpus.

Oh and for what it's worth, I have plenty of anecdotal information that
bibliographic metadata was a very hard problem for the relational model.
It may have been solved in the last few years, but it was still a
storage-eating performance killer ten years after the RM was the 'best
practice' for 'widgets in warehouses.'

> Still, I remain open minded, and if someone can offer proofs that support:
> - XML as a best practice (in any regard)

Publishing/documents. I agree, Nature should maintain their subscriber
list in Oracle. That's not where the articles belong.


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