Flight_ID Passenger_ID Seat_Number Seat_Cost Seat_Class 1 3 j15 $112.00 Business 2 5 K16 $38.00 Economy 3 4 A12 $85.00 Economy 4 2 B05 $40.00 Economy 5 1 C08 $85.00 Economy 6 5 B12 $85.00 Economy 8 7 K17 $42.00 Economy 9 6 L25 $125.00 Business I need to be able to allow duplicated in the Flight_ID which is the primary key so i can allow more passengers to be able to "fly" on that flight :confused: iD