Elements cannot be described more than once in DTD, right ?

Pavel Velikhov pvelikho at cs.ucsd.edu
Wed Sep 22 09:18:26 BST 1999


> > It is interesting to find out whether this is a serious problem for you,
> > or something that you can get around/tolerate.
> 
> I'd be a bit surprised if anyone considered this to be a serious problem and amazed if it was
> intolerable. :-) Schemas are interesting and will probably play a big role in times to come,
> but I don't believe that they offer anything that can't currently be done by other means.
>

Well, theoretically they are pretty serious problems. If you want to
take a union of DTDs,
say when integrating two XML databases, you might end up with a DTD that
allows a lot of
junk elements, while the original DTDs were strict enought. In the
database setting, when
the DTDs are used as database schemas, this leads to all sorts of
problems.

xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev at ic.ac.uk
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 at ic.ac.uk the following message;
(un)subscribe xml-dev
To subscribe to the digests, mailto:majordomo at ic.ac.uk the following message;
subscribe xml-dev-digest
List coordinator, Henry Rzepa (mailto:rzepa at ic.ac.uk)





More information about the Xml-dev mailing list