You are testing the performance of a query the first time you run the query, the performance is slow. the second time you run the query, the performance is fast. why is this?

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How to replace not in with not exist?

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What is database design and development?

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What is bit datatype and what's the information that can be stored inside a bit column?

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how to find the first two highest salaries in deptno in emp table

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Explain about the relational database?

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Given an employee table, how would you find out the second highest salary?

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How do you implement one-to-one, one-to-many and many-to- many relationships while designing tables?

1 Answers   Flextronics, Hexaware, SQL Star,

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How to use timestamp datatypes

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Explain about relational operator join?

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What are the key features of dbms?

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What are the disadvantages of cursors? How can you avoid cursors?

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