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- From: "Falk, Alexander" <falk@icon.at>
- To: "'xml-dev@xml.org'" <xml-dev@xml.org>
- Date: Wed, 10 May 2000 13:38:39 +0200
You first have to differntiate between what Microsoft calls "XML Schemas"
and what the W3C calls "XML Schemas". If the Microsoft web-pages or MSDN
documentation talks about XML Schemas, they currently are mostly talking
about a simplified version of the schema dialect proposed in the "XML Data"
note submitted to the W3C in January 1998
(http://www.w3.org/TR/1998/NOTE-XML-data/) that is commonly referred to as
the "XML Data Reduced" or short XDR Schema dialect today. This XDR schema
dialect (http://msdn.microsoft.com/library/psdk/xmlsdk/xmls5gkl.htm) is also
used as the basis for BizTalk (http://www.biztalk.org) and Microsoft is
constantly augmenting this in newer releases of their MSXML parser
component. Microsoft has, however, said that they would eventually migrate
BizTalk to the new W3C XML Schemas once they are finalized.
What is nowadays called an "XML Schema" by the W3C, is specified by the "XML
Schema Definition Language" and defined by the "XML Schema Part 1:
Structures" document (http://www.w3.org/TR/xmlschema-1/) and the "XML Schema
Part 2: Data Structures" document (http://www.w3.org/TR/xmlschema-2/) which
are currently in "last call draft" state. These are expected to become the
XML Schema standard in the future, but it will still take some time until
this becomes a W3C recommendation.
The other question is what you mean by "support". There are many simple XML
tools available for the Windows PC that use the MSXML parser provided by
Microsoft and thus can validate an XML document against an XDR schema.
On the other hand there are professional tools, such as XML Spy 3.0
(http://www.xmlspy.com), that not only can validate against both XDR and the
new April 7 draft of the W3C XML Schemas, but also provide the ability to
edit both schema kinds, convert DTDs to schemas, convert between different
dialects, and generate schemas from example XML documents.
Alexander Falk
... Icon Information-Systems
... ALEXANDER FALK
... President, CEO
... http://www.icon-is.com/falk
-----Original Message-----
From: Saifi ,Khan (CTS) [mailto:KSAIFI@pun.cts-corp.com]
Sent: Mittwoch, 10. Mai 2000 12:03
To: 'xml-dev@xml.org'
Subject: Current Status of XML Schemas ...
I am interested in knowing the current status of XML Schemas,
from non-Microsoft viewpoint!
Are there any non-Microsoft products that support XML schemas ?
I would appreciate receiving some more info about XML Schema
resources, web-pagest.
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