You have a table with three columns: amount1, amount2, and amount3 in a single row only one of these three columns will have a value and the other two will be null. Write a sql query to retrieve the values from these columns?

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Explain about relational operator join?

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What is the difference between a primary index and a secondary index? What is a duplicate data entry in an index? Can a primary index contain duplicates?

5 Answers   IBM,

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There is a trigger defined for INSERT operations on a table, in an OLTP system. The trigger is written to instantiate a COM object and pass the newly insterted rows to it for some custom processing. What do you think of this implementation? Can this be implemented better?

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How to use online Backups?

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State the acid rules?

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Explain the family trees and connection by clause.

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Does QTP Support the Propjects which are running in Dot Net? As we are starting with new project in Dot net need to use automation tool?Please advice & let me know what would be the best.

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What are the constraints on severity level in raiseerror?

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Explain about the hierarchical model of the database?

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What are defaults? Is there a column to which a default can't be bound?

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Write short notes on XSU and JAVA

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