title: Plone 4 data is stored on the file system rather than in the database?
body: <p>According to this post:
  <a href="http://ifpeople.wordpress.com/2010/10/20/plone-4-best-yet-of-the-best-cms/" rel="nofollow">http://ifpeople.wordpress.com/2010/10/20/plone-4-best-yet-of-the-best-cms/</a></p>
  
  <p>There is words about data storage:</p>
  
  <blockquote>
    <p>Plone 4′s capacity  to handle very
    large files has improved drastically
    since all file data is now stored on
    the file system rather than in the
    database. This enhances the ability of
    Plone to scale to handle huge content
    repositories out of the box!</p>
  </blockquote>
  
  <p>I'm not plone user. What the meaning of that words? Is it flat file database?</p>