WinFS is the codename for Microsoft?s next-generation relational file 
system for Windows. As an essential piece of Microsoft?s Integrated  
Storage strategy, WinFS bridges the gap between file systems and     
databases and provides a unified, rich programming platform for all   
data: structured, semi-structured, and unstructured. With WinFS,      
Developers will be able to use its unified Item Data Model across    
applications, present new relational organization constructs for data,
and create applications that exploit data more powerfully. WinFS is a 
development platform that will improve developer productivity and     
reduce organizations? time to market.