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Given the Flights, Buses and Cruises relations displayed below, show the resulting relations obtained from applying the following relational algebra expressions: a) city (Flights) b)

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Given the Flights, Buses and Cruises relations displayed below, show the resulting relations obtained from applying the following relational algebra expressions: a) city (Flights) b) city (Buses) city (Flights) c) city (Flights) city (Buses) d) (city (Cruises) city (Buses) ) city(Flights) e) Cruises X Buses f) Cruises Buses g) Flights Buses h) Flights Cruises

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