Question
Consider the following relational database: flight (flight-no, source-airport, destination-airport) reservation ( passenger-ssn, flight-no, class) airport (airport-name, city) Give the corresponding SQL queries for each of
Consider the following relational database:
flight (flight-no, source-airport, destination-airport) reservation ( passenger-ssn, flight-no, class) airport (airport-name, city)
Give the corresponding SQL queries for each of the following. (a) Find the airport names that have been destination of at least one flight that has not been reserved by passenger with id 999.
(b) Find the average number of business-class flights for the passengers.
(c) Find the passengers that have more number of flights than the number of Ankara-Berlin flights of each passenger.
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Database Support For Data Mining Applications Discovering Knowledge With Inductive Queries Lnai 2682
Authors: Rosa Meo ,Pier L. Lanzi ,Mika Klemettinen
2004th Edition
3540224793, 978-3540224792
