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Using JDBC to extract data into XML

Legacy data can enter the XML age with ease

Nicholas Chase (nicholas@nicholaschase.com), Writer, Freelance

Nicholas Chase has been involved in Web site development for companies including Lucent Technologies, Sun Microsystems, Oracle Corporation, and the Tampa Bay Buccaneers. Nick has been a high school physics teacher, a low-level radioactive waste facility manager, an online science fiction magazine editor, a multimedia engineer, and an Oracle instructor. More recently, he was the Chief Technology Officer of Site Dynamics Interactive Communications in Clearwater, Florida. He is the author of three books on Web development, including Java and XML From Scratch (Que). He loves to hear from readers and can be reached at nicholas@nicholaschase.com.

Summary: XML is best suited to storing data, so it's inevitable that at some point someone will ask you to pull information from a database and manipulate it as though it were XML. This tutorial will teach you to access a database using JDBC and use SQL to pull information, which you will then use to build an XML Document using a predetermined mapping.

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Date: 24 Jan 2012 (Published 28 Sep 2001)
Level: Intermediate
PDF: A4 and Letter (117 KB | 30 pages)Get Adobe® Reader®

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Learn

For information on using JDBC to insert data from an XML document into a database, read the companion tutorial Using JDBC to insert XML data into a database.
For a basic grounding in XML read through the Introduction to XML tutorial.
For information on the Document Object Model, read the Understanding DOM tutorial.
For an intro to programming XML, try Doug Tidwell's XML programming in Java.
Order XML and Java from Scratch, by Nicholas Chase. While it doesn't have more details on the use of JDBC, it does cover the use of XML and Java in general. It also covers other data-centric views of XML, such as XML Query, and other uses for XML, such as SOAP. And besides, it's written by the author of this fine tutorial.
See Sun's Sun Microsystems' information on JDBC.
A July 2001 look at the latest JDBC: What's new in JDBC 3.0 by Josh Heidebrecht
An easy JDBC wrapper by Greg Travis
For pointers to details on working with DB2 and JDBC, see the Java Enablement with DB2 summary page.
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Get products and technologies

Download a zip archive of the sample code presented in this tutorial.
Download the Java 2 SDK, Standard Edition version 1.3.1.
Download Java Web Services Developer Pack 1.1 and get JAXP 1.1, the Java APIs for XML Processing.
Download JDBC drivers for your database.
Download JDataConnect, a JDBC driver that supports DB2, Oracle, Microsoft SQL Server, Access, FoxPro, Informix, Sybase, Ingres, dBase, Interbase, Pervasive and others.
For an open-source database, download MySQL and a MySQL JDBC driver.
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