title: Date of last login or read operation on a SQL Server database?
body: <p>Lets say I have a SQL Server with 100 databases on it. How can I find out which ones are actually being used? 
  (without turning them all off and waiting for the complaints to come in) 
  So 'have been accessed in the last week' or something like that.</p>
  
  <p>I've tried the data file dates but they don't seem to represent that and databases do not seem to have a property that reflects this either.</p>