Explain ddl (data definition language)?


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Explain clearly how to explain any (sales) project in interview. Actually feom where report developer work starts?pls reply as soon as possible?

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Explain what are the various transformation available?

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Explain difference between snow flake and star schema. What are situations where snow flake schema is better than star schema to use and when the opposite is true?

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What is the difference between er modeling and dimensional modeling?

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Hyperion is the one of the tool in data ware house. Its an olap tool. Why you cant display that tool?

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Fact table is in normalized or de-normalized form?

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Explain what is type 2 version dimension?

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what is parallelism?

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Explain how to get the first 100 rows from the flat file into the target?

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Explain what is the difference between power center & power mart?

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what is Materialized Views?

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