Source Descriptions

Flight database San Francisco International Airport

Flight database United Airlines

Pilot’s work schedule

sfo(Airline,Flight_no,To)

united(Flight_no,From,To)

ws(Date,From,To,Pilot,Aircraft)

=> flight(Airline,Flight_no,sfo,To)

=> flight(ua,Flight_no,From,To)

=> flight(Airline,Flight_no,From,To) &

schedule(Airline,Flight_no,Date,Pilot,Aircraft)

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