An example of PL/SQL collection for nested table

DECLARE
   TYPE employee IS TABLE OF VARCHAR (5);
   employees   employee:= employee ('A', 'B', 'C', 'D','E');
BEGIN
   FOR i IN employees.FIRST .. employees.LAST
   LOOP
      IF employees (i) = 'C'
      THEN
         DBMS_OUTPUT.PUT_LINE (employees (i));
      END IF;
   END LOOP;
END;