title: EF 4.1 Code First - add column
body: <p>I have my database already set, I want to add a new field to the model, a new column to the table, is there a way I can do this without losing all my data?
  Normally if you delete the DB it will recreate everything automatically but I don't want to lose the data.
  I'm using SQL Server 2008 as database.</p>