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What are the approaches used by optimizer during execution plan?


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More Data Warehouse General Interview Questions

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

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How can you set the session management?

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What is drill-through?

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Suppose we want to display zero when null values coming to report how can we do that?

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Explain what are the methodologies of data warehousing?

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What are the tools available for etl?

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What is the goal of optimizer?

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Explain the difference between keylokup and joiner?

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How many clustered indexes can you create for a table in dwh? In case of truncate and delete command what happens to table, which has unique id.

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What is surrogate key? Explain with examples.

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Explain what is a view as it relates to system modeling?

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what is Materialized Views?

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