DBI202_-_PESP_2024_s_9_1497.webp
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DBI202_-_PESP_2024_s_9_1497.webp

Question 9:
Create a trigger named T1 for the delete statement on the "booking" table so that when we
call a delete statement to delete one or more rows from the "booking" table, the system will
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automatically delete also from the "baggage" table all the baggage of the deleted bookings.
For example, if we call the following statement to delete 2 bookings with id = 10 and id = 11 from the "booking" table, all the rows with booking_id = 10 and booking_id = 11 must also be deleted from the "baggage" table.
delete from booking where id in (10,11)
Question 10:
Write statements to insert into the "flight" table a new flight with id = 400 of the airline named 'Vietnam Airlines'; this flight departs at 23:15:00 on 17 March 2024 from the airport with the code 'HAN' and arrives at 06:30:00 on 18 March 2024 at the airport with the code 'CDG'.The departing_gate and the arriving_gate of the new flight must be NULL.
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