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   Veda's questions (Re: Namespace handling in XML Processors)

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  • From: Mark Nutter <mnutter@fore.com>
  • To: xml-dev@ic.ac.uk
  • Date: Tue, 31 Aug 1999 08:39:25 -0400

Though a novice, I thought I'd take a stab at this -- I think I understand, 
but let me know if I goof up.

At 03:53 PM 08/31/99 +0530, you wrote:
>Could someone tell me what is
>internal subset, external subset, Namespaces in XML.

Internal subset:  entities are declared within the individual XML document 
(rather than in the external DTD) inside the DOCTYPE tag.

External subset: entities are declared in the DTD (i.e. external to the 
particular individual XML document).

Namespaces:  using a special syntax, you associate a particular prefix with 
a particular (arbitrary?) URI, and then use that prefix in front of all 
your tags, e.g. if you define a "foo" namespace, then instead of using a 
<bar> tag you would use a <foo:bar> tag.  If you've been following XML-DEV 
lately you might get the idea there is some question as to whether 
namespaces accomplish anything useful or not... :-)

>Is there any website which discusses them and the XML terms in general.

You might want to explore Robin Cover's XML (etc) 
pages:  http://www.oasis-open.org/cover/


Mark Nutter, <mnutter@fore.com>
Internet Applications Developer
FORE Systems

When birds start perching on the lawn, it's time to mow it.

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