This section provides an example of a trigger.
The following trigger action copies a row from the flights table into the flight_history table whenever any row gets inserted into flights and adds the comment "inserted from trig1" in the status column of the flight_history table.
CREATE TRIGGER trig1
AFTER UPDATE ON flights
REFERENCING OLD AS UPDATEDROW
FOR EACH ROW
INSERT INTO flights_history
VALUES (UPDATEDROW.FLIGHT_ID, UPDATEDROW.SEGMENT_NUMBER,
UPDATEDROW.ORIG_AIRPORT, UPDATEDROW.DEPART_TIME,
UPDATED ROW.DEST_AIRPORT, UPDATEDROW.ARRIVE_TIME,
UPDATEDROW.MEAL, UPDATEDROW.FLYING_TIME, UPDATEDROW.MILES,
UPDATEDROW.AIRCRAFT,'inserted from trig1');