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RE: updategrams

  • From: Michael Rys <mrys@m...>
  • To: "'james.anderson@m...'" <james.anderson@m...>
  • Date: Mon, 14 Aug 2000 01:21:12 -0700

Dear James

> 1. please a pointer to the base description itself (not just the
> download). thanks.

The given URL provides info and documentation should be included. Please
note that the current version requires the beta2 bits of SQLServer 2000.

> 2. anyone can give a rundown on why they went for a diff technique
> rather than a direct pat specification with a replacement value?

The scenarios that we tried to address were mid-tier caches that want to
synchronize with the database. Direct pat specifications with replacement
values would not fit that well into these scenarios and would go more
towards an update language that would require a query language. While XPath
could cover some aspects, we did not want to invent something in that space
before XML Query and its relationship to update languages is clear.

Please note that people can design their own XML update language in
conjunction with the OpenXML XML rowset provider inside T-SQL stored

I hope this helps.

Best regards
Program Manager, SQL Server XML Technologies
mrys@m..., rys@a...
We store the Web and more...

> "Simon St.Laurent" wrote:
> > 
> > Has anyone taken a look at Microsoft's "updategrams" for XML?
> > 
> > >Updategrams define the structure of an XML document that can
> > >be used to describe a change to another XML document. The change
> > >is described by presenting what a fragment of the document looked
> > >like before the change and what the fragment should look like after
> > >the change. The before data is used to locate the portion of the


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