Role Based Access Control

One can acquire more information regarding role based access control from a variety of sources, including ones public library, as well as online sources such as Juniper or Hytrust.

Yes. You can get the circuit diagram of Fingerprint based access control system.

In a distributed component-based middle ware system may not determined if a certain person can carry out a certain action in a role based control. This is because the middle ware only recognizes 'groups' of people, The group is assigned certain roles. If a person has been granted access to the group then the person can perform any role that is available to the group.

DAC - Discretionary Access Control.