Stylus Studio (http://www.stylusstudio.com), the provider of XML tools and components for advanced data integration, announced the availability of a new XQuery tutorial entitled: Defining your own Functions in XQuery. This new tutorial provides numerous XQuery examples and valuable technical insight that is certainly worth book-marking! Learn how to leverage powerful XQuery functions in just minutes.

Defining your own Functions in XQuery was written by XML industry guru, Dr. Michael Kay, founder of Saxonica, the producer of the Saxon XQuery and XSLT processor. Dr. Kay is a member of the W3C committees on XQuery, XPath, and XSLT, and the author of numerous best-selling XML books. You can read the new tutorial online for free.

Not all developers understand the power of XQuery – but more and more are turning to XQuery to help create advanced data integration applications every day. This new tutorial gives XML developers the information on modules and functions they need to take advantage of the full power and flexibility of XQuery. Being able to define your own functions in XQuery can be one of the most useful skills you learn this year.  Dr. Michael Kay states, "XQuery functions have a useful function!"  Defining your own Functions in XQuery covers the following topics:

•               A simple XQuery function example
•               The function name
•               XQuery Function arguments
•               The result type
•               The function body
•               Modules and Schemas
•               Documenting XQuery functions
•               Using Functions to Mask Schema Complexity
•               Writing Recursive Queries

How to Build XQuery Applications Today
Once you've read Defining your own Functions in XQuery, the easiest way to build real-world XQuery applications is with Stylus Studio® 2006 XML Enterprise Edition, the world's leading XQuery development tool, with full support for XQuery Editing, XQuery Mapping, XQuery Debugging, XQuery Profiling, and more. Stylus Studio also supports Java code generation and XQuery output validation, so you can quickly and easily develop and deploy live XQuery applications using industry-leading XQuery processing components like DataDirect XQuery and Saxon. Download a free trial of our award-winning XQuery tools today!

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