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Having clause
Example: Find maximum salary and department number of those departments where maximum salary is more than Rs 20000/-.
SELECT DEPTNO, MAX(SAL) FROM EMP
GROUP BY DEPTNO HAVING MAX(SAL) > 20000;
Question: (a) List four disadvantages of the File Processing System as compared to the Database Systems. (b) The integrity of a database is enforced by integrity rules. One
what is completeness constrent?
Types of Data fragmentation
Mention the several levels in security measures. A) Database system B) Operating system C) Network D) Physical Human
Can a domain, assigned to a data element be changed? Yes. We can do so by just overwriting the entry in the field domain.
Two Phase Locking (2PL) The two-phase locking protocol having of two phases: Phase 1 : The lock acquisition phase : If a transaction T needs to read an object, it wants to
We face problem of stock Opening balance and closing balance in Minus
What is horizontal fragmentation? Horizontal fragmentation divides the relation by assuming every tuple of r to one or more fragments
what are the purposes of dbms in details
pine vally company
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