code: def delete_app_info(app_id):
      
      try:
          conn = get_conn()
          c = conn.cursor()
          c.execute("DELETE FROM container WHERE app_id='{0}'".format(app_id))
          c.execute("DELETE FROM app WHERE id='{0}'".format(app_id))
          conn.commit()
          #print 'clear old app %s in db succeed!' % app_id
      except Exception, e:
          raise RuntimeError('clear old app %s in db failed! %s' % (app_id,e))
docs: delete app info from local db