We can easily destroy old or unneeded objects as need be using the DROP statements.
SQL> drop view cell_view; View dropped. SQL> select * from address_book; ID NAME HOME_NUM CELL_NUM ---------- ------------------------------ ------------ ------------ LOCATION ---------------------------------------- 1 Ben Rockwood 510-555-1234 650-555-2345 Menlo Park, CA 2 Tamarah Rockwood 510-555-4443 Menlo Park, CA 3 Nova Rockwood Menlo Park, CA SQL> drop table address_book; Table dropped. SQL>