[
Lists Home |
Date Index |
Thread Index
]
- From: "Michael Kay" <M.H.Kay@eng.icl.co.uk>
- To: <xml-dev@ic.ac.uk>
- Date: Wed, 2 Dec 1998 10:18:37 -0000
>How can you represent a strictly acyclic graph using ID/IDREF?
You make the IDREF attribute optional, and use the absence of a value (the
#IMPLIED default) to indicate a node that has no "parent".
There are many other solutions, e.g. you could have a dummy element with the
special ID value of "NULL", but I can't see why one would want to.
Mike Kay
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/
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)
|
