Which is faster union or join?

0 Answers  

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what is ref cursor in pl/sql?

3 Answers  

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List different type of expressions with the example.

0 Answers  

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how do you tune the slow running queries in oracle db , explain the methodology

0 Answers  

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what is mean by forward declaration and where we'll use it.

4 Answers   TCS,

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Which type of cursor is used to execute the dml statement?

0 Answers  

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From an Employee table, how will you display the record which has a maximum salary?

29 Answers   Cap Gemini, Exilant, Synechron,

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what is difference between decode and case function?

2 Answers  

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how can we transpose a table using sql (changing rows to column or vice-versa) ? : Sql dba

0 Answers  

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8 Answers   Wipro,

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Can primary key be changed?

0 Answers  

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What are the possible values for the boolean data field?

0 Answers  

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