Re: [xml-dev] Lesson Learned: Use namespaces for both markup anddata

[Dave Pawson <davep@dpawson.co.uk>]

On 12/08/09 04:20, Michael Kay wrote:
>> I definitely don't agree with Roger's idea of using QNames in
>> data, either, though-IMHO that dangerously mixes metadata with data.
>>
>
> But the notion that metadata and data can be separated is itself deeply
> flawed. If I have two lines of business, "product sales" and "services", are
> these two things data or metadata? You'll find some systems in which they
> are data (rows), others in which they are metadata (columns). Similarly, if
> I have three kinds of personnel, "salaried", "hourly-paid", and
> "contractors". Or if I have 23 kinds of asset on the books, or 592 kinds of
> equipment, I will sometimes want to treat these as types and sometimes as
> instances. Mixing metadata and data is something we have to live with.
> Functional data models rightly eliminate the distinction.
>
> Regards,
>
> Michael Kay
> http://www.saxonica.com/
> http://twitter.com/michaelhkay


I'd call prefixes syntactic sugar for 'JCNames'.
Are namespaced elements metadata? Which would make tags metadata I guess.

How else could we add metadata to tags?


regards

-- 
Dave Pawson
XSLT XSL-FO FAQ.
http://www.dpawson.co.uk