Archive for March, 2008

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What is an alias and how does it differ from a synonym ?

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What is a synonym? How is it used ?

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What is a NULL value? What are the pros and cons of using NULLS?

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What is the significance of DB2 free space and what parameters control it ?

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What is SPUFI?

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What is lock contention ?

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What is the database descriptor ?

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Is there any advantage to denormalizing DB2 tables ?

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Usually, which is more important for DB2 system performance - CPU processing or I/O access?

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What is a cursor and what is its function ?

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What is tablespace ?

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What is the difference between group by and order by ?

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What is a subselect? Is it different from a nested select?

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Explain an outer join ?

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What is a view? Why use it?

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