XML namespace

An identifier in an Extensible Markup Language (XML) message for element types and attribute names referenced by a Universal Resource Identifier (URI). The URI refers to the document that contains definitions for the element types and any attribute names.

For example:

xmlns="http://www.actuate.com/soap/2001/12/eReportSchema/ClusterAdministration"

Related terms

attribute, element, Extensible Markup Language (XML), uniform resource identifier (URI)

Contrast with

Unicode