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RE: Escher could have drawn it (Re: XML Schema and Entities)

• From: Mark Feblowitz <mfeblowitz@f...>
• To: "'Bullard, Claude L (Len) '" <clbullar@i...>,"'vdv@d... '" <vdv@d...>,"'xml-dev@l... '" <xml-dev@l...>
• Date: Thu, 21 Jun 2001 11:10:58 -0400

 
Yes - 

You can consolidate an entire vocabulary of different doc types into a
single Schema Definition file. Very convenient for distribution of related
schema definitions. The down-sides have already been mentioned.

Now, will we ever get to (or need to get to) a point where we can have an
instance file with multiple roots?

-----Original Message-----
From: Bullard, Claude L (Len)
To: vdv@d...; xml-dev@l...
Sent: 6/21/01 9:45 AM
Subject: RE: Escher could have drawn it (Re: XML Schema and Entities)

That would say under XML Schema, a document can 
be rootless in the classical sense.  It is more 
like VRML, which having been designed from the 
beginning to be object-oriented, has no document 
root, simply a comment that must be included 
at the head of the file.  XML Schema in that 
sense has been oriented toward object design. 

Is this the case, that by having multiple 
global elements, we can design a schema 
with multiple document roots, or perhaps 
simply, multiple trees?

Len 
http://www.mp3.com/LenBullard

Ekam sat.h, Vipraah bahudhaa vadanti.
Daamyata. Datta. Dayadhvam.h


-----Original Message-----
From: Eric van der Vlist [mailto:vdv@d...]

> In such a case, you
> could deduce that <a> is the root element, even if it is not
explicitly
> marked as such. However, it may be the case that other elements, <x>,
> <y> and <z> could also be defined with the same content model as <a>,
> and therefore there are 4 possible root elements for a schema valid
> document. Is this the case?

Yes, all you have to do is to define these 4 elements as global.

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