title: Alter Table query in entity framework
body: <p>I have a query regarding <code>ALTER TABLE</code> in ENTITY FRAMEWORK.
  I want to drop the composite key of a table, edit data in it, then want to retain the primary key again.
  My doubts are:</p>
  
  <ol>
  <li>How this can be accomplished as i couldn't find any alter table statement in LINQ?
  (Sorry forgot to mention i am using LINQ)</li>
  <li>Will edmx file will get updated on its own, when i'll drop and create the composite key through code?
  Please help.
  Thanks.</li>
  </ol>