Xml and Object/Relational Database
SMUENCH at us.oracle.com
Thu Dec 3 20:33:55 GMT 1998
In Oracle8i we're taking a approach to allow developers
the flexibility of storing XML Documents in any way they
choose along the spectrum of:
Single, Indexed text-BLOB ==> Fully Expanded into Foreign-Key linked Tables
The middle ground is that highly structured data gets mapped into
a set of related tables and structured text markup doc fragments
get mapped into text-BLOB's.
The simple example I use to show off why this might be interesting
would be to consider an Insurance Claim XML document like:
<Payee>Borden Real Estate</Payee>
A massive <Cause>Fire</Cause> ravaged the building and
<Casualties>12</Casualties> people were killed. Early
FBI reports indicate that <Motive>arson</Motive> is
If you map the settlement payment sections into tables and columns
and the DamageReport doc fragment into a text blob, then you can
query over your datawarehouse of Insurance Claims to answer a
"How much money has Jim Cox approved to date in settlement
payments for arson-related fire claims? "
Using a straightforward SQL statement like:
FROM Claim_Header ch,
WHERE csp.Approver = 'JCOX'
AND CONTAINS (DamageReport, 'Arson WITHIN Motive') > 0
AND CONTAINS (DamageReport, 'Fire WITHIN Cause' ) > 0
AND . . . /* Join Clauses */
We're participating in the W3C Query Language workshop today and tomorrow
(as well as follow-on W3C XML Query work) to help shape the eventual W3C
standard syntax for XML document queries. In the future, you may have
alternative syntaxes to answer the same questions of your enterprise
information, but this is our near term game plan.
Steve | Consulting PM & XML Technology Evangelist | smuench at oracle.com
Muench | Java Business Objects Dev Team | geocities.com/~smuench
Oracle XML Homepage http://www.oracle.com/xml
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From: Kacper Nowicki <kacper at odi.com>
Subject: Re: Xml and Object Database
Date: 03 Dec 98 11:19:42
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