I was in finance as well as trading risk management at one of the largest physical commodities trading houses in the world ($100+ billion revenue) and orders, positions, PNL, inventory, inventory movements, market research and analysis, and general business reports... yes, very expensive systems backing them... and they had to be done on Excel manually and synced daily to make sure if the main systems (absurdly complex) got out of sync, either one could be repaired as a failsafe.