Abstract:Security is a very vital concern in information system in this modern day. The protection of confidential files and integrity of information kept in the database are also of great important, the security model play an important role in protecting the privacy and integrity of messages in the database from unlawful users is a formal method to verify and describe intricate information system. An access Control mechanism is a main strategy for prevention and protection of the classified files in a database; this i… Show more
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