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Re: Validate **against** a schema OR validate **with** a schem

  • From: Robert Koberg <rob@k...>
  • To: xml-dev@l...
  • Date: Thu, 22 Jan 2009 19:04:17 -0500

Re:  Validate **against** a schema OR validate **with** a schem

On Jan 22, 2009, at 6:53 PM, Len wrote:

> Augmentation (defaulting from the DTD) tightly binds DTDs to  
> instances.  I think there is healthy consensus tight binding of DTDs  
> to instances is a bad idea.

Yep. How many times have you heard, "Dang! XSL is sooooo slow. What?  
You mean the XML parser is going out to the internet to find a DTD in  
the XML instance??"


> len
> -----Original Message-----
> From: dorchard100@g... [mailto:dorchard100@g...] On Behalf  
> Of David Orchard
> Sent: Thursday, January 22, 2009 2:54 PM
> To: Andrew Welch
> Cc: G. Ken Holman; xml-dev@l...
> Subject: Re:  Validate **against** a schema OR validate  
> **with** a schema?
> Defaulting values came from SGML days and DTDs..  So it's been  
> around for a while.  Many folks have wanted the validation and  
> augmentation steps separate though no real progress on that.
> Dave
> On Thu, Jan 22, 2009 at 12:51 PM, Andrew Welch <andrew.j.welch@g... 
> > wrote:
> >> 2. I validated the XML instance document with the schema.
> >
> > ... when I'm using validation to augment my XML....
> imho, "validation" and "augment" should be kept separate... If you
> need the augmentation call the step just that, not validation.
> I don't know the history of it, but I would guess defaulted values
> were a late addition to the validation process, rather than something
> included from the beginning??
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