Question: Why does the following violate third normal form? (flight_number is the primary key) flight_number aircraft pilot_id pilot_rank 526 Boeing 747-400 137 Captain 628 Airbus A320

Why does the following violate third normal form? (flight_number is the primary key)

flight_number aircraft pilot_id pilot_rank
526 Boeing 747-400 137 Captain
628 Airbus A320 139 Senior Captain
321 Airbus A320 137 Captain

Aircraft name is too long

There is a transitive dependency from flight_number -> pilot_id -> pilot _rank

Pilot_id 137 is not unique (it ised twice)

Aircraft name contains both the manufacturer and the type number

Pilot name is not provided

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