An XML based type-definition language for declaring content-index for WinFS Types is provided. Content-index declarations can be specified for the Item type as well as it's sub-entities like Fragments, etc across Item type hierarchies. The properties of WinFS types in the schema are marked for content-indexing...http://www.google.de/patents/US7590654?utm_source=gb-gplus-sharePatent US7590654 - Type definition language for defining content-index from a rich structured WinFS data type
