Review Questions:
1. What is the use of CASE statement in PL/SQL?
2. What does the WHEN keyword do?
3. How do you end a CASE statement?
4. Is CASE statement written in the declare section?
5. Write PL/SQL code to implement CASE statement to assign grades to students based on marks.
6. Write PL/SQL code to implement CASE statement to assign names of days of the week to numbers.
7. Write PL/SQL code to implement CASE statement to assign names of months to numbers.
