OASIS Mailing List ArchivesView the OASIS mailing list archive below
or browse/search using MarkMail.


Help: OASIS Mailing Lists Help | MarkMail Help



   Re: DTDs

[ Lists Home | Date Index | Thread Index ]
  • From: Oliver Becker <obecker@informatik.hu-berlin.de>
  • To: xml-dev@ic.ac.uk
  • Date: Thu, 27 May 1999 10:25:51 +0200 (MET DST)


> A document has only one DTD. However, a DTD is principally just a set of
> markup declarations. It is possible to take the markup declarations of two
> DTDs and have a document use the union as a DTD. Note that you would have to
> modify the content models in at least one of the original DTDs in order to
> allow for elements from one DTD to include elements from the other.

... unless you have ANY as content model ;-)

Another question concerning this topic:

The XML spec states at the end of 2.8
"If both the external and internal subsets are used, the internal subset is
 considered to occur before the external subset."

How do I express this?
The syntax allows me to write the following:

<!DOCTYPE example SYSTEM "example.dtd" [
   <!ELEMENT example (something)>
   <!-- and so on -->

How will the external (example.dtd) and the internal subsets be merged
in this case?

Or do I have to write

<!DOCTYPE example [
   <!ENTITY % external SYSTEM "example.dtd">
   <!ELEMENT example (something)>
   <!-- the same as above -->

Thank you in advance,

|  ob|do        Dipl.Inf. Oliver Becker                             |
|  --+--        E-Mail: obecker@informatik.hu-berlin.de             |
|  op|qo        WWW:    http://www.informatik.hu-berlin.de/~obecker |

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


News | XML in Industry | Calendar | XML Registry
Marketplace | Resources | MyXML.org | Sponsors | Privacy Statement

Copyright 2001 XML.org. This site is hosted by OASIS