Question:Examine the following code:
CREATE OR REPLACE TRIGGER secure_emp
BEFORE LOGON ON employees
BEGIN
IF (TO_CHAR(SYSDATE, 'DY') IN ('SAT', 'SUN')) OR
(TO_CHAR(SYSDATE, 'HH24:MI')
NOT BETWEEN '08:00' AND '18:00')
THEN RAISE_APPLICATION_ERROR (-20500, 'You may
insert into the EMPLOYEES table only during
business hours.');
END IF;
END;
/
What type of trigger is it? 

A DML trigger 
B INSTEAD OF trigger 
C Application trigger 
D This is an invalid trigger 

+ Answer
D 

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Md. Habib Ullah

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