title: Updating Entities in symfony-2
body: <p>I created entities from my database using the following command</p>
  
  <pre><code>#1 php app/console doctrine:mapping:convert xml ./src/Acme/DemoBundle/Resources/config/ doctrine/metadata/orm --from-database --force
  
  #2 php app/console doctrine:mapping:import AcmeDemoBundle yml
  
  #3 php app/console doctrine:generate:entities AcmeDemoBundle
  </code></pre>
  
  <p>After that I may alter some tables in the database.</p>
  
  <p>What steps should I follow to reflect the changes in the symfony-framework?</p>