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Difference between Operating System and Database Security
Security within the operating system can be executed at various levels ranging from passwords for access to system, to the isolation of concurrent implementing processes with the system. Though, there are a few differences among security measures taken at operating system level as compared to those that of database system. These are:
Figure shows the architecture of a database security subsystem that can be found in any commercial DBMS.
Figure: Database Security subsystem
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what does glory be mean
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About Attribute inheritance
In tuple relational calculus P1 → P2 is equivalent to ? A In tuple relational calculus P1→ P2 is equivalent to ¬P1 V P2. (The logical implication expression A B, meaning
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