How to delete a user in Oracle 10 including all it's tablespace and datafiles

Question

When I give the command to drop a user i.e. DROP USER \'username\' cascade,

1. Does it deletes all the tablespace and datafiles used by that particular user.

Answer 1

DROP USER---->
DROP USER USER_NAME CASCADE;
DROP TABLESPACE---->
DROP TABLESPACE TABLESPACE_NAME INCLUDING CONTENTS AND DATAFILES;