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By :Mark Wilson
I am the creator of TopXML. I am available for international and local (Australia) contracts. I am a Solution Architect/Business Analyst. I have worked in IT in several countries (NZ, Australia, South Africa, UK) building and training teams for government and very large non-governmental organizations. I am ex-Microsoft Consulting Services. I wrote the first book on Microsoft XML published in 2000 called XML Programming with VB and ASP. Most recently I have been building tools for the SEO industry. Ask me for a 37 point SEO health-checkup for your website.
First posted :03/24/2008
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XQuery Validate Expressions

Validate Expressions are used to validate XQuery Expressions, included within brackets. It also supports validating against an XML Schema.

Worksheet 12: Validate Expression examples

Expression:

Example(s):

Validate Expressions

1. <root>

   {

     LET $a := validate{1,2,3,4,5}

     RETURN $a

   }

   </root>

This expression validates the given expression in brackets. Once again, it is not implemented and therefore cannot be tested – the message returned is:

Expected 'RETURN' where { encountered.

This concludes our tutorial. Although there are some interesting xqueries, it appears that the implementation does lack quite some functionality that would make MS XQuery Demo a really interesting option to consider using in our everyday programming practices.

But anyway, it is a demo, and will stay that way for some time more. I think that when the final status has been reached for some XQuery specifications by the W3C, current active implementers will update their products in a very short time.


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