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RE: Namespace Usage Question

• To: "'Clark C . Evans'" <cce@c...>, xml-dev@l...
• Subject: RE: Namespace Usage Question
• From: Michael Brennan <Michael_Brennan@A...>
• Date: Thu, 20 Dec 2001 19:36:12 -0800

Well, I just stumbled across an example of C. I remembered you had posted
this query, so I'm passing on the reference. 

Microsoft uses a fragment identifier as a namespace URI as part of their XML
serialization format for ADO recordsets (specifically, they use
"#RowsetSchema"). You can see the XML format used at:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/ado270/htm/
mdconxmlpersistformat.asp

As a bit of an aside, I think it would be interesting to survey how many
schemas/specs are using namespace URIs that rely upon proprietary URI
schemes. One example I know of is SyncML, which uses the URI
"SYNCML:SYNCML1.0" as its namespace URI (see the spec at
"http://www.syncml.org/docs/syncml_represent_v101_20010615.pdf").


> -----Original Message-----
> From: Clark C . Evans [mailto:cce@c...]
> Sent: Tuesday, December 18, 2001 9:41 PM
> To: xml-dev@l...
> Subject:  Namespace Usage Question
> 
> 
> I did some searching for publicly known namespaces 
> (schema in particular) which use the flexibility of 
> URI references by either being non-absolute or having 
> a fragment.  In other words, one of the following cases: 
> 
> A.  xmlns:foo="relative"
> B.  xmlns:foo="http://somehost/somepath#fragment"
> C.  xmlns:foo="relative#fragment"
> 
> I've seen a few of class A in examples, but I haven't found 
> a schema using A.  As for B and C, I'm still looking for a 
> schema that uses fragments as part of its URI reference.   
> Perhaps I'm not looking hard enough....
> 
> Any pointers would be helpful.  I'm not interested in
> a debate on the merits, just interested in those who
> may have used this XML namespace feature in the "real world"
> and perhaps a description of why.  I will summarize 
> private responses with this header in a few days time.
> 
> Kind Regards,
> 
> Clark

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