title: Update database schema without dropping data?
body: <p>I started using EF using database first and generating my diagram from the database. </p>
  
  <p>Now I have switched and made many changes to my diagram and would like to update my database schema without data loss. However, generating database from the diagram seems to drop all the tables and recreate them.</p>
  
  <p>I have found 'data migrations' for code first. Is there anything similar for model first, or any way I can maintain the data?</p>
  
  <p>I am using VS 2012 with EF5</p>