• To: <xml-dev@l...>
• Subject: Re: XQuery types was Re: Yet another plea for XUpdate...
• From: "Rick Jelliffe" <ricko@a...>
• Date: Thu, 4 Jul 2002 18:27:53 +1000
• References: <5.1.0.14.0.20020507125322.02029e20@n...>

From: "Jonathan Robie" <jonathan.robie@d...>
 
> Actually, the XML Schema list is shorter. There are 12 tools listed on 
> their tool page, but only about 7 of these are not schema validators, 
> depending on how you count. XML Schema is a REC, XQuery is a Working Draft.

Actually, that tool list is not a list of implementations per se, because thers is some
double counting (Topologi's Schematron Validator uses MSXML, for example.)
There are at least current 9 implementations of  XML Schemas:

  XSV
  MSXML (and I think the .NET validator is different code)
  Apache  (also reused in Sun's implementation?)
  Sun MSV
  Oracle
  Altova
  Tibco 
  IBM SQC (+other validator folded into Apache now?)  
And (I would hope after all this time) a couple of others.

Compare Schematron, for which there are between 10 to 17 
implementations (depending how you count :-)

  ASCC (XSLT)
    (about 8 different implementations, each working on
    at least 8 different implementations of XSLT)
  ZVON (XSLT)
  PHP
  Perl
  C++ (Cocoon)
  Python
  VB
  Java
  Java (MSV, experimental)
  
RELAX NG has at least 5 implementations, plus a lot of
supporting tools.
    
Cheers
Rick Jelliffe

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