Q:
Explain how PL/SQL exceptions are raised.
Answer
PL/SQL exceptions are raised using the RAISE command. This command is used when exceptions are defined by programmer and not implicit exceptions.
Example:
Declare and raising an exception:
DECLARE
short_of_attendance EXCEPTION;
min_attendance NUMBER(4);
BEGIN
...
IF min_attendance < 10 THEN
RAISE short_of_attendance;
END IF;
EXCEPTION
WHEN short_of_attendance THEN
-- handle the error
END;
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