title: Django What is reverse relationship?
body: <p>Can someone tell me what is reverse relationship means?
  I have started using Django and in lot of places in the documentation I see 'reverse relationship, being mentioned. What is it exactly mean? why is it useful? What does it got to do with related_name in reference to <a href="https://stackoverflow.com/questions/2642613/what-is-the-related-name-mean-in-django">this post</a> ?</p>