Consider the following relations in a Hotel database. Hotel (HotelNo, HotelName, Address, Capacity) Booking (CustomerNo, HotelNo, Date, NumberOfGuests). HotelNo is the primary key of the Hotel relation. Assume that (1) a customer can book the same hotel on different dates; (2) a customer can book multiple hotels on each date; (3) a hotel can be booked by multiple customers on each date. What is the most suitable primary key for the Booking relation? Justify your answer. Write the SQL statement to define an assertion BookLimit that ensures "each customer cannot book more than 3 hotels on each (1) (2) date". (3) Write the SQL statement to define an assertion CapacityLimit that ensures "the total number of guests booked for each hotel on each date cannot exceed the hotel capacity".

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