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Explain difference between e-r modeling and dimentional modeling?


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More Data Warehouse General Interview Questions

Explain what are the different methods of loading dimension tables?

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"A dimension table is wide but the fact table is deep," explain the statement in your own words.

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What is execution plan?

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Explain why fact table is in normal form?

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What is an IDQ file? What is the purpose of the IDQ file and what kindof information does it usualy hold? Can it be imported by informatica?

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Where we use surrogate key explain with example?

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What is a fact table?

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Explain how many ways you create ports?

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What is the difference between a primary and secondary actor in use case modeling?

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Explain grouped cross tab?

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Which parameter specified in the default storage clause of create tablespace cannot be altered after creating the table space?

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Why we use repository connectivity?

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