- From: Bob Schloss <rschloss@us.ibm.com>
- Date: Fri, 2 Aug 2002 11:32:51 -0400
- To: Steve Willis <Steve.Willis@us.michelin.com>, xmlschema-dev@w3.org
- Message-ID: <OF4CEF57B1.7E9786FE-ON85256C09.0054B491@us.ibm.com>
There were several proposed or implemented Schema languages using XML syntax, including XML-Data, XML-Data-Reduced (XDR), DSD, which were considered as starting points when the W3C Schema working group began work. The working group had a difficult job of balancing the needs of document- oriented application designers (including extensible frameworks like XHTML) and the needs of data-oriented application designers, and ended up designing the language you can find out more about at http://www.w3. org/XML/Schema . As far as I know, some Microsoft software can handle XDR schemas or W3C XML Schema language, although Microsoft strongly urges that all new schemas be created in the W3C XML Schema language. As far as I know, some software from Sun Microsystems can handle RELAXNG schemas or W3C XML Schema language. I think some tools suites, like XMLSpy, also allow you to author schemas in more than 1 language, but most of their new function is going to support the W3C Schema language, as far as I know. But to the extent that there are universally supported languages, at this point in time there is only DTD as described in the XML 1.0 recommendation, and the W3C XML Schema language. Several books have been published describing the W3C XML Schema Language. You can also read the Primer, http://www.w3.org/TR/xmlschema-0. Bob Schloss IBM Thomas J. Watson Research Center Hawthorne, New York, USA P.S. For checking the early schemas you write, you might try IBM's XML Schema Quality Checker. See http://www.alphaworks.ibm.com/tech/xmlsqc Steve Willis <Steve.Willis@us.michelin.com>@w3.org on 07/31/2002 11:41:16 AM Sent by: xmlschema-dev-request@w3.org To: xmlschema-dev <xmlschema-dev@w3c.org> cc: Subject: XML-Data vs. XML Schema Last November I went to a XML class in which they taught XML-Data representation of XML Schemas. In looking at the w3c XML Schema primer listed on your page there seems to be some significant differences in what I was taught and what seems to be recommended by the w3c. I've not been able to find something that describes what one is vs. the other and what the current acceptance of it is in the industry today. I'd like to board the ship destined to a port rather than the bottom of the ocean so if you can give some guidence on the current acceptance and future of each of these specifications I'd appreciate it. Steve *************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept for the presence of computer viruses. ***************************************************************
Received on Friday, 2 August 2002 11:34:18 UTC