6.24

Design a database for an airline. The database must keep track of customers and their reservations, flights and their status, seat assignments on individual flights, and the schedule and routing of future flights.

Your design should include an E-R diagram, a set of relational schemas, and a list of constraints, including primary-key and foreign-key cosntraints.

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Relation schemas:

customer(customer_id, name, phone_number, address)
flights(flight_id,src,dest,timestamp_src,timestamp_dest)
reservation(customer_id,flight_id)

Note: This is a very simplistic design!