Q$1.$ Given the database described by the following tables:

STORE $($STNO$,$ Address, Surface$)$

PRODUCT $($PNO$,$ DesProd, color, Weight, Qty$\_$Stk$,$ Qty$\_$Min, Price, STNO#$)$

Write a PL$/$SQL block that uses an implicit cursor to check that Store $10$ exists and then inserts the new product $(120,$ 'TABLE', 'WHITE', $20,10,5,500,10)$

Q$2.$ Given the following table

EMP $($Empno$,$ Ename, $...,$ SAL, Comm, Deptno#$)$

Develop a trigger that records any change of salaries done during the $5$ working days $($assumed as days $1,2,3,4$ and $5)$ into the table:

AUDIT$\_$EMP$\_$SAL$($Uname$,$ ActionDate, OldSal, NewSal, DayNo$)$