Assignment 5 PLSQL Assignment 2 Notice: be sure to exccute the following command before you start working on the following questions set serveroutput on; 1. Re-do the question 4 of the PL/SOL Assignement 1 by using loop control. Hint: consider using VARRAY. For example DECLARE type gradeCount is varray (5) of integer; gdent gradeCount; type grade is varray (5) of char (1) gd grade: BEGIN gdcnt gradeCount (0,0,0,0,0) END; 2. Type the following anonymous block and execute it. DECLARE sm binary integer -0 i binary integer-0: BEGIN loop ii+1 ifi 10 then exiti end if end loop; dbms output.putline('sum-'I1 sm 11.' END: 3. loop and while loop respectively, and Revise the above program by using for execute them. The revised program should have the same result as the above program