[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message]

Re: Extra Complexity?

• From: "Samuel R. Blackburn" <sblackbu@e...>
• To: <xml-dev@i...>
• Date: Sat, 6 Feb 1999 17:44:13 -0500

It depends on how you use XML. If you use it to transfer
data between applications then DTD's are completely useless.
Their assumption that the world is flat is inappropriate for
data applications. Also, the validations performed using DTD's
don't buy you anything. The application must perform its own
validation based upon some business rules. DTD's allow you
to "validate" that a field contains a number but you can't use
DTD's to "validate" that a field contains a prime number (that
is an application layer validation).

If you want to replace HTML (i.e. pretty text) then DTD's become
useful.

HTH,

Sam
http://ourworld.compuserve.com/homepages/sam_blackburn

-----Original Message-----
From: Dan Holle <dan@h...>
To: xml-dev@i... <xml-dev@i...>
Date: Saturday, February 06, 1999 5:07 PM
Subject: DTD: Extra Complexity?


>Many applications I've seen, and a few that I have created, don't validate
>the XML against a DTD.
>
>Is the DTD an extra step, inherited from SGML, that doesn't really fit XML?
>
>--dan


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...)

• Follow-Ups:
  • Re: Extra Complexity?
    • From: Jeff Greif <jmg@t...>
  • Re: Extra Complexity?
    • From: Paul Prescod <paul@p...>
  • Re: Extra Complexity?
    • From: John Cowan <cowan@l...>

• Prev by Date: Re: DTD: Extra Complexity?
• Next by Date: Re: Extra Complexity?
• Previous by thread: ANN: xmlproc 0.60
• Next by thread: Re: Extra Complexity?
• Index(es):
  • Date
  • Thread