What are snapshots? What are materialized views & where do we use them?


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More Data Warehouse General Interview Questions

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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Explain what are the modules in power mart?

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What a static and local variable?

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What is the function of etl when used in data warehousing?

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What are components of reportnet?

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What needs to be done when the database is shutdown?

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What are fact, dimension, and measure?

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what is the synchonus? wht is the diff between synchronous and asynchronous what is the diff between v1 and v2 v3 delta modes in sap ecc

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What is the difference between drill through and masterdetail reports?

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How to handle time period attribute for time dependent data?? a.)add time period as a part of pk b.)add time period simply and make it nullablec.)add time period simply and make it not null.

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What is the goal of optimizer?

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State any 5 of Cods guidelines of an OLAP system, brief description each?

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