Reagarding the flow of tables

HI,As i know these are the tables that get hits  with different status when we create an order in order management can u please explain the functionality of the following tables and which one gets hits at what action.
   
                         Base tables                              columns
   enter          oe_order_headers_all                   flow_status_code='entered' and booked_flag='n' and open_flag='y'
                     oe_order_lines_all                          flow_status_code='entered' and booked_flag='n' and open_flag='y'
booked          oe_order_headers_all                    flow_status_code='booked' and booked_flag='y'
                     oe_order_lines_all                         flow_status_code='waiting shipping' and booked_flag='y'