Question: Data Base Consider the relations below: Passengers (Name, Address, Age) Reservations(Name, FlightNum, Seat) Flights(FlightNum, DepartCity, DestinationCity, DepartureTime, ArrivalTime, MinutesLate) Write relational algebra expressions to: -Get

Data Base

Consider the relations below: Passengers (Name, Address, Age) Reservations(Name, FlightNum, Seat) Flights(FlightNum, DepartCity, DestinationCity, DepartureTime, ArrivalTime, MinutesLate)

Write relational algebra expressions to:

-Get the names of passengers who had a reservation on a flight that was more than 30 minutes late.

-Get the names of passengers who had reservations on all flights that were more than 60 minutes late.

-Get the names of pairs of passengers who are the same age.

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