Q)WRITE A TRIGGER TO STOP ALL DML OPERATIONS BETWEEN 9A.M TO 10A.M ON EMP TABLE?

STATEMENT LEVEL TRIGGER EXAMPLE:
Create or Replace Trigger MyTrig
Before
Delete or Update or Insert 
on Emp
Declare 
T number;
Begin
Select to_char(Sysdate,'hh24') into T from Dual;
If (T>=9 and T<=10) then
Raise_Apllication_Error(-20000,'sorry we cannot perform any DML Operations on Emp because it is                                           break fast Time');
End If;
End;