XQuery Kick Start

Chapter 4. Extensions and Modular XQuery

by Kurt Cagle

IN THIS CHAPTER

• Extending XQuery with Libraries

• Enhancing XQuery with Pragmas and Extensions

• Importing Modules

• Invoking External Functions

• Using Library Modules Effectively

• In Brief

Extending XQuery with Libraries

If you could point to a single innovation within SQL that facilitated the use of the language at the enterprise level, it would probably be the capability to store and retrieve prebuilt scripts, passing in parametric information in the process. One of the later developments in the evolution of the XQuery Recommendation has been the recognition that it should be possible to build functions that encapsulate specific functionality in XQuery, and it should also be possible to store and retrieve ...