title: Implementing identifying relationships with EF4
body: <p>I'm currently in a situation where I need to delete entities without having access to the associated <code>ObjectContext</code>. I read about identifying relationships and they seem to be exactly what I need: I want to delete an object, once it is no longer referenced by its "parent" object.</p>
  
  <p>I am using Visual Studio 2010 Premium to generate my database from an edmx file. As far as I understand, I need to include the foreign key of my "parent" object in the primary key of my "child" object table. However, I cannot find a way to tell Visual Studio to do this.</p>
  
  <p>Can someone please help me out on this? Am I completely on a wrong path or am I just missing a setting somewhere?</p>