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Using XQuery and VoiceXML

Create a dynamic VoiceXML application

Martin Brown, Developer and writer, Freelance Developer
Photo of Martin Brown
Martin Brown has been a professional writer for over eight years. He is the author of numerous books and articles across a range of topics. His expertise spans myriad development languages and platforms -- Perl, Python, Java, JavaScript, Basic, Pascal, Modula-2, C, C++, Rebol, Gawk, Shellscript, Windows, Solaris, Linux, BeOS, Mac OS/X and more -- as well as Web programming, systems management and integration. Martin is a regular contributor to ServerWatch.com, LinuxToday.com and IBM developerWorks, and a regular blogger at Computerworld, The Apple Blog and other sites, as well as a Subject Matter Expert (SME) for Microsoft. He can be contacted through his Web site at http://www.mcslp.com.

Summary:  XQuery and VoiceXML are a perfect combination. XQuery provides a very simple and direct method to generate XML documents from other XML documents. Because you can pick and choose the different elements that you want from the source XML file, and format the output file in any way you wish, you can easily produce a VoiceXML document that contains the exact information you need. In this tutorial, you see how to employ XQuery with XML documents to build complex and dynamic systems that take input and information from a VoiceXML environment and combine them with existing XML documents to produce interactive applications.

Date:  06 May 2008
Level:  Intermediate
PDF:  A4 and Letter (76 KB)Get Adobe® Reader®

Activity:  10414 views
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Before you start

This tutorial is for developers interested in implementing a VoiceXML solution using XQuery. Familiarity with XQuery is helpful but not required. Readers should be familiar with basic XML and RSS concepts.

About this tutorial

Frequently used acronyms

  • DTMF: Dual-tone multi-frequency
  • GNU: Gnu's Not UNIX
  • HTML: Hypertext Markup Language
  • RSS: Rich Site Summary
  • URL: Uniform Resource Locator
  • XML: Extensible Markup Language
  • XSLT: Extensible Stylesheet Language Transformations

XQuery provides a method to select and process different elements of an XML document out into a different XML or other structure. One of the main benefits of XQuery over other formats is that you can contain the processing and XML within the same file. This can make it easier to process and manage an XQuery document compared to a traditional XSLT and XML, or language (Perl, Python, Java™ or others) and XML solution.

In this tutorial, you will build an application (see Resources to access a live demo) that takes a list of potential RSS feeds, organized by topic. The application provides the caller with the opportunity to choose a topic, then a feed within the topic list. The system then reads out the news generated from that feed.

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Prerequisites

The following tools are required to follow along with this tutorial.

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static.content.url=http://www.ibm.com/developerworks/js/artrating/
SITE_ID=1
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ArticleID=305869
TutorialTitle=Using XQuery and VoiceXML
publish-date=05062008
author1-email=mc@mcslp.com
author1-email-cc=dwxed@us.ibm.com

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