[ciq] An important question between Schema and DTD

[Ram Kumar <rkumar@msi.com.au>]

Guys

I need some suggestions regarding DTD when it comes to namespaces.
Can you tell me how we are going to support external namespaces in
our standards using DTDs? For example, the next version of the CIQ
standards will support external namespaces in the schema (you can
use elements/attributes of other schemas into ciq standards. For example,
name and address elements/attributes not supported in xNAL can be imported
into xNAL from other external namespaces). This has been a requirement for
many who are implementing standards.

I do not know how we are going to support this feature in DTD. Is there
any good document that talks abouthandling namespaces in DTD? Please advise.
This is a very important issue if we want to move forward with namespace
support for our standards.

Regards

Ram

> Hey,
> 
> It';s a good job we're not taking a vote on this Schema
> goals stuff too - since IMHO the current schema stuff has 
> lamentably failed on most
> of these criteria below!!!
> 
> Anyway:
> 
> 1. We will support both DTD and W3C schema for future versions
>    of CIQ Standards:  YES 
> 2. We will support only W3C Schema for future versions
>    of CIQ Standards:  NO
> 3. We will support only DTD for future versions
>    of CIQ Standards:  NO 
> 
> Interestingly - I'm currently working on the ebXML AssemblyDoc
> technology - and this provides a means to describe the 
> XML instance in simple XML and then automatically generate
> DTD, Schema, RELAX or EDI structure definitions.  I beleive this
> will solve the issue of how to adequately describe the interchange
> and assembly requirements in ways Schema alone is not able to.
> 
> The full spec' for AssemblyDoc and samples (using address!)  
> will be available in two to three weeks.
> 
> Thanks, DW.
> =========================================================
> Message text written by Nikolaj Nyholm
> >The XML schema language shall be:
> 
> more expressive than XML DTDs; 
> expressed in XML; 
> self-describing; 
> usable by a wide variety of applications that employ XML; 
> straightforwardly usable on the Internet; 
> optimized for interoperability; 
> simple enough to implement with modest design and runtime resources; 
> coordinated with relevant W3C specs (XML Information Set, Links,
> Namespaces,
> Pointers, Style and Syntax, as well as DOM, HTML, and RDF Schema). 
> The XML schema language specification shall:
> 
> be prepared quickly; 
> be precise, concise, human-readable, and illustrated with examples.
> 
> </quotation><



 

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