To learn more about the syntax of XQuery Namespaces, see the following URL:
http://www.w3.org/TR/2002/WD-xquery-20020816/#id-namespace-decls
To learn more about XQuery namespaces, see Understanding the Transformation in the Tutorial: Building Your First Data Transformation.
To learn more about the namespace prefixes used in WebLogic Workshop, see XQuery Namespace Conventions.