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What is a view? Make a view of EMP table named DEPT 20, to display the employees in department 20 and their annual salary.
Ans: View is a virtual table that does not consists of it own data it fetch the data from the original table.
Create view DEPT20 as select * from dept;
Where dno=20 group by dno;
Function requirement as given: 1> manage fans and likes and followings those information from facebook. twitter. google+ and linkedin etc 2> Organize the clients from email m
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real life situations where database management system are most suitable
Having Clause with sub queries: First we have to recollect the GROUP BYclause. The following query searches the minimum salary in every department. SELECT DEPTNO, MIN (SAL)
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What is equi join? Equi Join - It generates all the combinations of tuples from two relations which satisfy a join condition along with only equality comparison (=).
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