title: Prevent Django from creating tables -connecting to existing DB
body: <p>I am developing an application in Django for my company. Planning to use an existing DB. When I was playing around Django, I saw the framework creating django_sessions table when the server fired up, and other tables when migrate command is provided. Since I am planning to use existing DB, how can I prevent Django from creating Django_session. Other tables, as I understand, are created only when migrate b is fired.</p>
  
  <p>django 1.8.6 and python 2.7.11</p>
  
  <p>Completely new to Django.</p>