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RE: How can I constrain publicly available schemas?

  • To: "Fraser Crichton" <fraser.crichton@s...>, <xml-dev@l...>
  • Subject: RE: How can I constrain publicly available schemas?
  • From: "Chiusano Joseph" <chiusano_joseph@b...>
  • Date: Sun, 3 Apr 2005 19:33:47 -0400
  • Thread-index: AcU4oPKo1b/JkFt8TlO1bCEPEjUd2gABGMog
  • Thread-topic: How can I constrain publicly available schemas?

publicly available schemas
<Quote>
for instance one of the immediate children the CustomerDetails element
can be either OrganisationInfo or PersonInfo. My system, however, only
wants to process PersonInfo elements and never OrganisationInfo so, do I
-
</Quote>

According to your explanation, there's no issue because there is a
choice (that is, an xs:choice) in the schema of using OrganisationInfo
or PersonInfo - so if your XML documents always have PersonInfo elements
and never OrganisationInfo elements, they should conform to the schema
in that regard.

Kind Regards,
Joseph Chiusano
Booz Allen Hamilton
Visit us online@ http://www.boozallen.com
 

> -----Original Message-----
> From: Fraser Crichton [mailto:fraser.crichton@s...] 
> Sent: Sunday, April 03, 2005 6:56 PM
> To: xml-dev@l...
> Subject:  How can I constrain publicly available schemas?
> 
> Hi,
> 
> I'm working on an application where I need to use subsets of 
> publicly available schemas.
> 
> For instance, to model contacts information I'm using xCIL 
> however xCIL has a very large range of formats, for instance 
> one of the immediate children the CustomerDetails element can 
> be either OrganisationInfo or PersonInfo. My system, however, 
> only wants to process PersonInfo elements and never 
> OrganisationInfo so, do I -
> 
> a) create a more specific schema using the xCIL namespace (!) 
> (if so, should I then validate it twice - once against xCIL 
> and then against my more specific schema)
> 
> b) XML.com has this article - Designing a New Schema with XML 
> Design Patterns - 
> http://www.xml.com/pub/a/2003/06/04/patterns.html - which 
> would seem to suggest selectively reusing types and global 
> elements from other namespaces, are there any problems with 
> this approach?
> 
> c) is the schema just a contract and I should use something 
> else again for validation?
> 
> Is this a dumb question or has anybody else come across this 
> issue and if so how have they approached it?
> 
> Cheers,
> 
> Fraser
> 
> 
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