DB2 10.5 for Linux, UNIX, and Windows
XML namespaces and QNames
An XML namespace is
a collection of names that is identified by a namespace URI. Namespaces
provide a way of qualifying names that are used for elements, attributes,
data types, and functions in XQuery. A name that is qualified with
a namespace prefix is a qualified name (QName).
XML
namespaces prevent naming collisions.