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- From: Daniel Austin <daniela@cnet.com>
- To: "'Lisa Rein'" <lisarein@finetuning.com>, xml-dev@ic.ac.uk
- Date: Thu, 10 Jun 1999 16:03:09 -0700
Lisa,
This sort of structure cannot be represented easily in XML, since it
cannot be mapped to a simple heirarchichal tree structure. In practice, what
usually happens is that a third element is used to contain the internal
paragraphs and additional information beyond the DTD is required for
complete validity testing/processing. But your friend is correct in the
sense that there are (many) data structures that cannot be mapped to XML;
XML really applies only to semi-structured data sets where relationships
between elements are restricted to parent-child relationships - a
heirarchical tree.
Additional, more complex relationships among elements must be specified
outside of XML.
Regards,
D-
*********************************************************************
Daniel Austin, Director of Research and Development, CNET
daniela@cnet.com 415-395-7800 x1438
"To change the old into the new, and the shapes of things to come..."
> -----Original Message-----
> From: Lisa Rein [mailto:lisarein@finetuning.com]
> Sent: Thursday, June 10, 1999 4:14 PM
> To: xml-dev@ic.ac.uk
> Subject: question for a friend
>
>
> Hello,
>
> A friend of mine asked me a question I didn't feel like I gave him a
> good enough answer for, so I bring it to you...
>
>
> say we have a part of a document below (probably a part of a very long
> document). Yes i KNOW this is misnested. this is the point. he was
> saying that this kind of context couldn't be represented using a
> well-formed structure:
>
> <realestate>
> FFFFFFFFFFFFFFFFFFFFFFFFFFFFF
> FFFFFFFFFFFFFFFFFFFFFFFFF
> FFFFFFFFFFFFFFFFFFFFFFFFF
> <newyork>
> FFFFFFFFFFFFFFFFFFF
> FFFFFFFFFFFFFFFFFFFFFFFFFFFFF
> FFFFFFFFFFFFFFFFFFFFFFFFF
> FFFFFFFFFFFFFFFFFFFFFFFFF
>
> FFFFFFFFFFFFFFFFFFFFFFFFFFFFF
> FFFFFFFFFFFFFFFFFFFFFFFFF
> FFFFFFFFFFFFFFFFFFFFFFFFF
> </realestate>
>
> FFFFFFFFFFFFFFFFFFFFFFFFFFFFF
> FFFFFFFFFFFFFFFFFFFFFFFFF
> FFFFFFFFFFFFFFFFFFFFFFFFF
> </new york>
>
> where the two paragraphs in the middle are "realestate:newyork", but
> only if they are taken together.
>
>
> No matter how I represented the structure above in a
> well-formed manner,
> I couldn't quite pull off the "only when taken together" part.
>
> Any suggestions?
>
> thanks,
>
> lisa
>
>
http://www.finetuning.com
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