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DB2 9 for Developers by Philip K. Gunning

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Chapter 2. DB2 9 Enhancements

DB2 9 is a hybrid relational and XML data server that provides the ability to store both relational and XML data. DB2 is the first database to provide integrated support for a native XML data type, and it supports both SQL and XQuery using the same optimizer and database engine. Many in the database industry are comparing the significance of this fundamental change with the invention of the relational database.

XML has become the interchange and document format of choice across a broad range of industries. Until now, however, XML hasn’t been tightly integrated into relational databases. DB2 9 introduces a new native XML data store that is fully integrated in the DB2 database engine, letting you access and manage XML ...

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