title: circular dependency in entity framework
body: <p>Is it possible to save model which has got circular dependency ?</p>
  
  <p>I denormalized my Database:</p>
  
  <pre>
  
  User
  --------
  UserId
  UserName
  LastOrder   - fk to last order
  
  
  Order
  -------
  OrderId
  OrderName
  UserId
  OrderDate
  
  
  </pre>
  
  <p>Is it possible to save sth like this using entityFramework?</p>
  
  <p>what should I change to make it work cause now I have got error:</p>
  
  <blockquote>
    <p>Unable to determine a valid ordering for dependent operations.
    Dependencies may exist due to foreign key constraints, model
    requirements, or store-generated values.</p>
  </blockquote>