Tip: Use XInclude to synchronize WSDL with source schemata

In the document/literal style of Web services, the schemas of the interchange formats are often based on an existing document standard. This can cause problems synchronizing WSDL files with the standard schemata. This tip shows how to use XInclude to incorporate external schema fragments into a WSDL file.

http://www.ibm.com/developerworks/xml/library/x-tipxinc.html?ca=drs-x0604