title: What is the simplest thing to do when database schema changed using EF code first
body: <p>I'm new to EF code first.  I have an existing database in production and I used EF 4.3.1 code first and everything worked.  Now I just updated my database schema and got the exception</p>
  
  <pre><code>System.InvalidOperationException: The model backing the 'MyDbContext' context has changed since the database was created. Consider using Code First Migrations to update the database (http://go.microsoft.com/fwlink/?LinkId=238269).
  </code></pre>
  
  <p>I can't use <code>DropCreateDatabaseIfModelChanges</code> since it is in production, what's the simplest way to take to cope with the schema change?</p>
  
  <p>Thank you.</p>