xlink xsd file?

Does W3C have an official xsd file associated with the http://www.w3.org/1999/xlink/ <http://www.w3.org/1999/xlink/>  namespace (not that it would be too difficult to create one, but if it exists, no sense re-inventing the wheel).
 
Chuck Han, Data Architect
Autodesk, Inc.
+1.415.507.8742