admin option
User account control settings.
sql>select * from user_tab_privs;
chown user filename
User Account Control
If you override the User Account Control it allows an application to be run even if the you do not have the required administrative privileges.
file and registry redirection
no you cannot access my document folder
This box appears each time a user attempts to perform an action that requires administrative privileges.
User account control
I think role is for these two purposes. 1>to grant a group of related privileges to a user 2>to simplify the process of granting and revoking privileges
true