#2 Re: Elements cannot be described more than once in DTD, right ?

Rick Jelliffe ricko at allette.com.au
Wed Sep 22 08:25:05 BST 1999

I forgot another option.

Make one generator-side DTD for data entry
 <!ELEMENT  affiliate ( a_operations, ...)>
 <!ELEMENT mechant (m_operations, ...)>
 <!ELEMENT a_operations (get, set)>
 <!ELEMENT m_operations ( signup )>

Then transform this for data distribution:
 <!ELEMENT  affiliate ( operations, ...)>
 <!ELEMENT mechant ( operations, ...)>
  <!ELEMENT operations (signup | (get, set))>

The first gives you strong typing for describing the schema
and the second allows simpler generic operations for using
the data (which is presumably why you want to reuse
the name "operations".) 

Rick Jelliffe

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