ballouta Posted March 14, 2014 Share Posted March 14, 2014 Hello I have these relations FLIGHTS (flight-num, source-city, destination-city) DEPARTURES (flight-num, date, plane-type) BOOKINGS (passenger-name, flight-num, date, seat-number) How is it possible to find all cities that have nonstop to Paris? a bit of explanation is appreciated thank you Quote Link to comment Share on other sites More sharing options...
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