[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: XML trade off 1 - DTD vs XML Schema
At 02:00 PM 7/21/99 -0700, MEdson@w... wrote: >So do you believe that both DTDs and XML Schemas are necessary? Would you >please elaborate on what advantage DTDs have over Schemas and if possible >explain why DTDs were NOT designed to be written in XML? DTDs are necessary because you need some formal way to describe (at least part of) your data design. They have their current syntax because the ISO committee that designed SGML thought it was better that way, and XML inherited them from SGML. XML Schemas are said by many to be necessary for a variety of reasons, including most prominently datatyping and the use of XML syntax. The most important difference between DTDs and syntax is that are here now and work now and standardized now. Admittedly one could wish for something better but until it arrives DTDs are what we have. -Tim xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i... Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ and on CD-ROM/ISBN 981-02-3594-1 To (un)subscribe, mailto:majordomo@i... the following message; (un)subscribe xml-dev To subscribe to the digests, mailto:majordomo@i... the following message; subscribe xml-dev-digest List coordinator, Henry Rzepa (mailto:rzepa@i...)
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