Data Security

The base layer of access control within Oracle Applications is Function Security. Function  Security restricts user access to the individual menus and menu options within the system.
The next layer of access control within Oracle Applications is Data Security. Working in  conjunction with Function Security, Data Security provides additional access control on the data  a user can see and what actions a user can perform on that data, within Oracle Applications.  Using Data Security, for example, you could control access to the set of orders that an order  administrator can update within the Order Management application.
User Management (UMX) provide the UIs for modeling data security within Oracle Applications.