Good Job, John!
Very "to the point" explanation ...
-- Jonathan Hadden
IntraLinks API Product Manager
--- [EMAIL PROTECTED] wrote:
> May I cut in?
>
> I'd like to quickly summarize the concept of
> information modeling in XML.
> (Please forgive me if I'm over-simplifying things,
> I'm not familiar with
> anyone's experience regarding XML).
>
> As you are probably already aware, XML enables us to
> make up our own tag
> names. We can also structure these tags in any
> order we wish. This could
> become quite an issue if there was no way to
> constrain the range of tag
> names and structures that might appear in a
> particular document (a trading
> partner would have a difficult time understanding
> the meaning of our
> messages).
> Using an agreed-upon information model, trading
> partners can utilize similar
> tag names and structures.
>
> The syntax for creating an information model is
> either DTD (document type
> definition - a unique syntax that is not XML) or
> some form of schema
> (utilizes XML syntax to describe our information
> model).
> One benefit of schema is support for data typing
> (DTDs have no concept of
> data types - most data is interpreted as simple
> text).
>
> There are currently several schema languages
> available for creating an
> information model (examples include, but are not
> limited to, W3C's XML
> Schema, XDR, SOX, TREX and RELAX).
>
> While all of these schema languages use XML syntax,
> they are not
> interchangable.
> Each of these schema languages requires a parser
> capable of processing their
> particular schema semantics (they all use XML
> syntax).
>
> The BizTalk Server requires messages (XML documents)
> to be formatted
> according to the BizTalk Framework. The BizTalk
> Framework requires
> information models to be created using the XDR
> schema language. XDR
> requires us to use the Microsoft MSXML parser (thus
> tying us to a
> vendor-specific implementation of an XML-based
> schema language).
>
> Note: Microsoft has promised to make the BizTalk
> Framework compliant with
> W3C XML Schema. W3C has not yet approved the use of
> XML Schema in
> production environments - it is currently a Proposed
> Recommendation.
>
> John Evdemon
> CTO
> Vitria/XMLSolutions
> www.vitria.com
> www.xmls.com
>
>
> -----Original Message-----
> From: Robin Anson <[EMAIL PROTECTED]>
> To: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
> Sent: Wed Apr 25 19:47:46 2001
> Subject: Re: xmledi-group Digest for 24 Apr 2001 in
> hour 22:00
>
> Brad, Rachel
>
> Thanks for forwarding your interchange of ideas to
> the list, it was most
> instructive.
>
> One point that particularly concerned me was when
> Brad wrote:
>
> >However, run a BizTalk document through Xerces, or
> whichever parser you
> >like-validating or not-and it will choke, unless it
> is MS's BizTalk parser.
> >A BizTalk message looks nothing like XML Version
> 1.0. Whereas an X12 850
> and
> >an 810 are clearly of the same standard.
>
> Now I haven't looked closely at BizTalk DTDs and
> software, I follow the
> development of XML/EDI very much at a high level.
> This comment though rings
> major alarm bells to me. Could you, Brad, or someone
> else give me a more
> detailed explanation of how BizTalk fails to look
> like XML Version 1.0 and
> why a BizTalk message must be run through a BizTalk
> parser?
>
>
> Robin Anson
> eCommerce Consultant
> PO Box 572, Eltham, Victoria, Australia 3095
> email: [EMAIL PROTECTED]
> tel: 04 1938 1900
>
> Every exit is an entry somewhere.
> - Tom Stoppard
>
>
>
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