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Briefly describe the different kinds of users of a DBMS.
Ans: Different sorts of DBMS users are:
(a) Software Engineers: These are the people accountable for developing application programs by using DBMS.
(b) End users: These are the people whose jobs need access to the database for querying, updating, and producing reports.
(c) Database Administrator: They are accountable for authorizing access to the database, coordinating and monitoring its use.
(d) Database designers: They are accountable for identifying data to be stored in the database.
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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