The object serializations carried out by the basic XML Streams Module classes are based on an XML schema. The schema is named xmlstreams.xsd and is located with the header files in buildspace\rw\xmlstreams. (The enhanced XML streams do not use this schema, instead producing a unique schema for each class.)

This schema depends on a schema defined by the World Wide Web Consortium and identified by the URI http://www.w3.org/2001/XMLSchema. That is, the Rogue Wave schema defines:

Thereafter, all XML schema keywords and basic types are prefixed with xsd to indicate they are defined by the specified version of the XMLSchema.

This schema is not required for XML streams to work. However, you can use it to validate the object serializations produced by XML streams if you need to do so.