revision,comment,date 1,Added ON DELETE RESTRICT constraint to flights table, 2,Added Airports, 3,Edited headers in Logbook view, 4,Added viewEASA for EASA logbook like display,2020-11-02 5,Added Diamond Aircraft to aircraft table,2020-11-19 6,Added icao/iata codes for Boeing in aircraft table,2020-11-19 7,Added autoincrement for flights pilots and tails tables,2020-11-20 8,changed column tDual to tDUAL in table flights for consistency in naming,2020-11-23 9,changed column id to flight_id in table flights for consistency in naming,2020-11-23 10,added viewDefault as a copy of Logbook (deprecated),2020-11-23 11,added viewQCompleter as a copy of QCompleterView (deprecated),2020-11-23 12,reworked views to display self or picname according CASE,2020-12-11 13,Reworked viewEASA to incorporate NULL handling,2020-12-17 14,Edited tails and aircraft tables - engineClass and weightClass instead of columns for each element,2020-12-19 15,Renamed some columns to have consistent naming,2020-12-26 16,Added CASE for views to account for occasions where aircraft variant is NULL,2021-02-03 17,Added currencies table,2021-02-12