Another look at namespaces
jtauber at jtauber.com
Mon Sep 20 14:11:04 BST 1999
> This distinction, that the Document Type Definition is not the same as the
markup declarations, is as old as
SGML makes the distinction and I think it is a good one but I don't think
XML does. In XML a DTD is the (formal)grammar defined by the markup
declarations and no more.
In SGML, Document Type Definition = names + syntax + semantics
In XML, Document Type Definition = names + syntax
(NOTE: I'm separating names and syntax to emphasis the distinction between a
choice of name for an element type and a choice of syntactic contraint.
Arbitrariness of the linguistic sign and all that)
Perhaps we need a word for names + syntax + semantics in XML.
Some people use "XML vocabulary" for this and others use "XML vocabulary" to
mean a set of element and attribute names along with their semantics (ie
little or no syntax).
Whether one views:
vocabulary = names + semantics
vocabulary = names + syntax + semantics
possible determines their standing on the number of namespaces XHTML 1.0
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;
To subscribe to the digests, mailto:majordomo at ic.ac.uk the following message;
List coordinator, Henry Rzepa (mailto:rzepa at ic.ac.uk)
More information about the Xml-dev