Q. What is one of the key requirements for standardizing facts in data warehousing?

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Q. Which of the following is an example of a type of fact that needs to be standardized?

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Q. What is the purpose of using conformed dimensions in a data warehouse?

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Q. What is a key consideration for standardizing facts in data warehousing?

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Q. Which type of dimension change involves corrections to the data in a data warehouse?

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Q. Type 1 changes for slowly changing dimensions relate to correction of errors.

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Q. To apply type 3 changes of slowly changing dimensions, overwrite the attribute value in the dimension table row with the new value.

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Q. Large dimensions usually have multiple hierarchies.

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Q. The STAR schema is a normalized version of the snowflake schema.

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Q. Aggregates are precalculated summaries.

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Q. The percentage of sparsity of the base table tends to be higher than that of aggregate tables.

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Q. The fact tables of the STARS in a family share dimension tables.

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Q. Core and custom fact tables are useful for companies with several lines of service.

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Q. Conforming dimensions are not absolutely necessary in a data warehouse.

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Q. A value circle usually needs a family of STARS to support the business.

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