Explain hybrid slowly changing dimension?


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More Data Warehouse General Interview Questions

What is a staging area? Do we need it? What is the purpose of a staging area?

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What is the difference between snowflake and star schema? What are situations where snowflake schema is better than star schema when the opposite is true?

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What is a fact table?

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How to import vsam files from source to target. Do we need a special plugin?

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Explain why denormalization is promoted in universe designing?

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How to stop a batch?

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Explain what is power center repository?

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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 are the main steps to build the data warehouse?

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Explain what are snapshots? What are materialized views & where do we use them? What is a materialized view log?

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Can we take backup when the database is opened?

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Explain which are the olap tools available that are supported by oracle?

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