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RE: [xml-dev] RE: Companies that have switched from RDBMS to pure XML database?

The big 3 (MS, Oracle, IBM) chose Hybrid Relational/XML as a plan.  Ron
Bourret has some categories on his site
http://www.rpbourret.com/xml/XMLDatabaseProds.htm#categories - he may have
data on this as well.
I have always been of two minds when someone says Native XML Database.  The
first mind is suspicous - show me the features - the trueness to XQuery and
Xml DM.  The second mind is that if you set out to be "native" you will have
less artifacts of being non native.

Our company moved the other direction - from native XML to relational.  This
was mostly due to the cost effectiveness of relational and the fact that if
we wanted XQuery we could get it for free from IBM DB2 Express.


-----Original Message-----
From: Costello, Roger L. [mailto:costello@mitre.org] 
Sent: Friday, March 12, 2010 9:31 AM
To: xml-dev@lists.xml.org
Subject: [xml-dev] RE: Companies that have switched from RDBMS to pure XML

Olivier Rossel wrote:

> You mean a switch from "RDBMS with XML features" to "pure XML
> databases", I presume.
> Right?

Sure. Companies that have made that switch are appropriate for my list.

David Lee wrote:

> Also are you interested in companies that have adopted "pure XML 
> Databases" or only ones that have done so AND entirely tossed any 
> Relational databases.

Companies that by-passed RDBMS and went straight to XML database would be
appropriate for my list.

Michael Kay wrote:

> People don't "switch" from one technology to another. They adopt a new
> technology alongside the old, and they coexist for decades, running
> different applications.
> Most of the applications that I have seen using XML databases would never
> have been implemented in an RDBMS. They might previously have used free
> databases, document management systems, operating system filestore, in
> cases object databases.

Do you know of companies that have opted for XML databases instead of free
text databases, document management systems, operating systems filestores,
or object databases?



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