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You declare the security attributes of an enterprise bean in with the Application Deployment Tool. This declarative approach to security enforcement has two major advantages. First, you save time because you don't have to code and debug security routines in your enterprise beans or their clients. Second, the administrator of the J2EE server can customize the security attributes for a particular production environment at deployment time.
The J2EE server enforces security at two levels: Authentication and Authorization.
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