title: When does Entity Framework open and close Database Connections?
body: <p>When I instance my "Entities" object in Entity Framework, and make a couple of queries using that Entities object, what happens to connections?</p>
  
  <ul>
  <li>Does it open a connection when I instance the object, and close it when I dispose of it?</li>
  <li>Or does it open and close a connection for each single query I execute?</li>
  </ul>
  
  <p>In either case, is it possible to change it so that it does the other thing?</p>