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Re: [xml-dev] XML: logical and/or physical model?
----- Original Message -----
From: "David Megginson" <dmeggin@...>
To: "XML Developers List" <xml-dev@...>
Sent: Friday, May 28, 2004 10:52 AM
> Michael Champion wrote:
>
> > As I understand it, it is the job of the RDBMS implementation to
> > perform whatever mapping from the logical to physical world is needed
> > to do this efficiently. [1] Perhaps one advantage of XML is that it
> > just blows off this distinction -- it gets a lot of its practical power
> > by 'modeling' relationships as *physical* containment of a set of
> > elements (which of course may be subtrees) inside other elements.
>
> I'd suggest a slightly different focus: the physical model is private while
> the logical model is public. XML is designed to handle the public, logical
> part so that people can share information without being forced to use the
> same physical models.
Maybe one could constrain this somewhat and say that XML is best suited to
handling a specific view of the logical model, rather than *representing*
an applications logical model.
Karl
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