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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;
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Find the names of all Albums that have more than 30 tracks. Result: (name: varchar(255))
What is meant by heuristic optimisation?Discuss the major heuristics that are applied during query optimisation.
What is a trigger
I have to solve a problem using access
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Sequential File Organisation The most necessary way to organise the collection of records in a file is to use sequential Organisation. Records of the file are stored in series
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