Question

How data granularity is applicable to data warehouse?

Answer 1

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Answer 2

Answer:

Data granularity refers to the level of detail.  Depending on the requirements, multiple levels of detail may be present.  The lower the level of detail, the better the data granularity.  Many data warehouses have at least dual-levels of granularity.  The user decides on the granularity levels based on data types and the expected system performance for queries.  Thus, data granularity has levels of details selected by users that apply to their data warehouses.  

Explanation: