title: DbContext trying to create tables
body: <p>I have  a custom DbContext class.
  I have existing tables in the system.
  I have setup a POCO based system.</p>
  
  <p>When I try to query the DbSet for  a table, then it tries to create the table.
  Now the table already exist in the DB, sql server will throw exception.</p>
  
  <p>How to suppress creation of tables via EF?</p>