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   RE: XML Schema?

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  • From: Development <Lombaj@ManhattanGroup.com>
  • To: XML-DEV@xml.org
  • Date: Thu, 29 Jun 2000 07:42:05 -0400

Request for clarification,

I would like to build on this question: are they (schemas) a replacement 
for DTD's?
are they validated using a DTD? - What is the future of DTDs - with respect 
to XML.

Can anyone point me to a definitive article on their relationship to each 

Thank you for your time and attention.


At 6/29/00 05:57 AM, you wrote:
> > I am a newbie, just started xml.
>Aren't we all with the exception of a few diehards? :-)
> > Can anyone tell me the exact definition of a schema?
> > I mean what exactly is a schema in  xml?
> >
> > Sorry if I am asking a stupid question.
>quoted from an article at xml.com by Norman Walsh:
>"A schema is a model for describing the structure of information. It's a
>term borrowed from the database world to describe the structure of data in
>relational tables. In the context of XML, a schema describes a model for a
>whole class of documents. The model describes the possible arrangement of
>tags and text in a valid document. A schema might also be viewed as an
>agreement on a common vocabulary for a particular application that involves
>exchanging documents."
>If you want to read more about schema's you should read the entire article:
>David Valera
>This is xml-dev, the mailing list for XML developers.
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