[
Lists Home |
Date Index |
Thread Index
]
> Versioning based on namespaces is currently very popular,
> especially with the W3C, who have used this mechanism for various XML
> technologies including SOAP, XHTML, XML Schema, and RDF. The namespace
> URI for documents that are versioned using the namespace is typically in
> the following format:
>
> http://my.domain.example.org/product/[year/month][/area]
No! the (rather regretable) dated W3C namespace URI are explictly _not_
for versioning, it's just that the W3C uses a dated format for any URI
that they intend to be permanent.
The date just indicates when the namespace name was allocated.
so for example
http://www.w3.org/1998/Math/MathML
is the namespace for MathML 1, 1.01 and 2.0 (and hopefully all future
versions of MathML)
similarly
http://www.w3.org/1999/XSL/Transform
is the namespace for XSLT 1 and for the XSLT 2 proposal.
(these older ones just have years, W3C started using months more
recently)
The dated format is unfortunate as it leads people to expect the URI to
change when a new version of the language is released on a later date,
but that's just the way it is.
David
_____________________________________________________________________
This message has been checked for all known viruses by Star Internet
delivered through the MessageLabs Virus Scanning Service. For further
information visit http://www.star.net.uk/stats.asp or alternatively call
Star Internet for details on the Virus Scanning Service.
|
