title: What is db/development_structure.sql in a rails project?
body: <p>There is a <strong>development_structure.sql</strong> inside my /db folder of my rails application (rails 2.3.4, ruby 1.8.7) and I am not sure exactly what it does.</p>
  
  <ol>
  <li>Is it needed for some specific environment? (I think I read somewhere that it's used for tests)</li>
  <li>Do I need to add it to my git repository?</li>
  </ol>