title: Model compatibility exception in Entity Framework
body: <p>When I execute my web app and try to save data into databse, this exception happens : </p>
  
  <blockquote>
    <p>Model compatibility cannot be checked because the database does not
    contain model metadata. Model compatibility can only be checked for
    databases created using Code First or Code First Migrations.</p>
  </blockquote>
  
  <p>I try lot of issue for resolve this problem , but it persist yet !!</p>