title: How can I query TFS for a historical list of check OUT's?
body: <p>I've got a client with recurring complaints about check-ins that fail to include some changes he makes, and he "loses" the changes.
  The only common thread I could find to his complaints are that his developers use the Source Control Explorer to manually check out files.</p>
  
  <p>I suspect human error. I suspect that they aren't checking out the files that later go missing.</p>
  
  <p>Problem is that his people are adamant that they are doing everything right, and TFS (2010) is now suspect of being dangerously sub-standard.</p>
  
  <p>I understand that in 2008, there was a TfsActivityLogging database that could show me a check-out history. In 2010, since they added collections, the structure changed, and I can't find a way to do that. </p>
  
  <p>Does anybody know how I can find a <strong>checkout</strong> history for a certain file?</p>