Add a constraint that enforces the restriction that the number of passengers on a plane cannot exceed the plane's capacity
What will be an ideal response?
CREATE ASSERTION PlaneCapacity
CHECK ( NOT EXISTS (
SELECT *
FROM Planes P, Flights F
WHERE P.Id = F.PlaneId AND P.Capacity <
( SELECT COUNT (*)
FROM Reservations R
WHERE R.FlightId = F.Id) ) )
Computer Science & Information Technology
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