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SQL Server's Service Broker messages can be (and most of the time are)
XML documents. So you can apply XQuery to them inside the database...
> -----Original Message-----
> From: Michael Champion [mailto:email@example.com]
> Sent: Wednesday, April 20, 2005 8:35 PM
> To: Ken North
> Cc: firstname.lastname@example.org
> Subject: Re: [xml-dev] A Stakeholder's Response: XQuery APIs for
> Tier and Clients
> On 4/20/05, Ken North <email@example.com> wrote:
> > >> and I'm hearing it for XQuery as the interface to XML DBMS or XML
> types in an
> > RDBMS
> > Some SQL platforms provide a tight integration of the database
> > message queues and queuing functions. You can, for example, run SQL
> > procedures to compose documents and place them in MQ Series message
> queue or
> > shred a document in a SOAP message in a queue.
> > You can run XQuery over message queues stored in the database.
> > Now consider the .NET environment, MSMQ and SQL Server 2005. Without
> > queues in SQL Server databases, how do I run XQuery against
> Use a
> > third-party processor?
> Are you familiar with the SQL Server 2005 Service Broker that is
> "enables faster and easier development of SQL Server applications that
> rely upon asynchronous, queued operations."
> I'm not too clear on its relationship to XQuery myself, but this is
> something I'm hoping to learn more about soon. Perhaps one of my more
> knowledgeable colleagues could help me out here :-)
> I definitely think that there are interesting use cases for building
> messaging in the database. I'm not clear on how this relates to
> Jonathan's point, however. Do you think having XQuery support in .NET
> would make it easier to run XQuery against messages. I would think
> that this would be a desirable DB engine feature, and that is where MS
> have focused our XQuery efforts.
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