Lab 19.3 Exercises

19.3.1 Use Collections of Records

In this exercise, you will learn more about collections of records.

Answer the following questions:

a)	Modify the script used earlier in this lab. Instead of using index-by table, use nested table.
b)	Modify the script used earlier in this lab. Instead of using index-by table, use a varray.
c)	Modify the script used earlier in this lab. Instead of using a cursor-based record, use a user -defined record. The new record should have three fields: first_name , last_name , enrollments . The last field will contain total number of courses in which a student is currently enrolled.