Udo,

A long time ago, I have published a somewhat na=EFve paper [1] on that =
topic. Essentially, I tried to get started with an operator suite that =
models stepwise transformations of schemas (I used DTDs back then), =
while these schema transformations were systematically completed into =
document transformations. (I am certainly not the only one that has done =
some thinking going into this direction.) This approach was inspired by =
the wonderful notion of database schema evolution with associated =
instance mapping, something that has further inspired me to introduce a =
generalized notion of coupled transformations recently [2]. I annotate =
the paper [1] with "na=EFve" because we never really applied this idea =
to a major evolutionary case study, and we never worked out the details =
to really make this scale; we did not even formalize the few silly =
operators that we came up with. Also, one would perhaps indeed want to =
put a GUI on top of such transformation language. What I am missing in =
contemporary tools (as mentioned by M. Kay), is a solid foundation on a =
transformational approach, as sketched in my na=EFve paper -- ideally =
something that makes useful reuse of grammar technology and general =
program transformation science. There is one piece of at least academic =
commitment I see on the subject of schema evolution, and that is about =
type-indexed datatypes, as carried out by the Generic Haskell folks in =
Utrecht and Bonn.

Regards,
Ralf Laemmel
Microsoft, Webdata/XML, Redmond

[1] http://homepages.cwi.nl/~ralf/retis01/
[2] http://homepages.cwi.nl/~ralf/CoupledSoftwareTransformations/


> -----Original Message-----
> From: xmlschema-dev-request@w... =
[mailto:xmlschema-dev-request@w...]
> On Behalf Of Udo Ende
> Sent: Friday, February 17, 2006 1:03 AM
> To: Xmlschema-Dev-Request
> Subject: XML transformation with changed XSD
> 
> 
> Hi,
> 
> I have a set of XML files being (correctly) validated to a XSD file. =
Now I
> upgrade the XSD file and therefore I have to change the XML files.
> 
> What is the best way to automate the transformation of the XML files? =
Are
> there any tools that can do that?
> 
> --
> Udo Ende
> Dipl.-Math. Univ.
> Software Engineer
> 
> MID Enterprise Software Solutions GmbH
> Eibacher Hauptstr. 141
> 90451 N=FCrnberg
> Telefon: +49 911-968 36-24
> Fax    : +49 911-968 36-10
> E-Mail : u.ende@m...
> WWW    : http://www.mid.de
> 


From richard.liu@u... Fri Feb 17 13:43:00 2006
Received: from maggie.w3.org ([193.51.208.68])
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