Drop a user schema including all schema objects (if any).
  
  Syntax:
DROP USER username [CASCADE]
Specify CASCADE to drop all objects in the user's schema.
 "Think of all the beauty still left around you and be happy" ~ Anne Frank
Related Oracle Commands:
CREATE USER 
  ALTER USER
  
  Related Views:
                                           USER_PASSWORD_LIMITS  
                                                                SESSION_ROLES
                                                                SESSION_PRIVS
                                                                SESSION_CONTEXT
 DBA_TS_QUOTAS                             USER_TS_QUOTAS
 DBA_USERS            ALL_USERS            USER_USERS
 V$SESSION
 V$SESSION_CONNECT_INFO