what is a primary key? : Sql dba

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Is coalesce faster than isnull?

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Is inner join faster than left join?

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What is denormalization in a database?

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table having two columns - entity,zone enity zone pen east pen west pen north pen south pen east pencil east pencil east pencil west I want the output as : entity east west north south pen 2 1 1 1 pencil 2 1 0 0

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What is a REF CURSOR? Compare strong and week ref cursor types.

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what is a record in a database ? : Sql dba

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How many times can we commit in a loop?

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IF EMP HAS 2 ROWS,DEPT HAS 4 ROWS.WHATS THE RESULT OF SELECT * FROM EMP,DEPT;

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What is a stored procedure ?

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what is a relationship and what are they? : Sql dba

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What will be the output for the below Query Select 'High' from dual where null = null;

12 Answers   Infosys, Satyam,

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