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Bitmap indexes in high-cardinality column

edited Jun 22, 2017 12:47PM in Database DataWarehousing (MOSC) 5 commentsAnswered

Sorry about the simple question, but my knowledge in DWH is very limited. What is the point to have BITMAP index in a DATE type column, with very high-cardinality on a Datawarehouse, besides of the index size? As far as I know bitmap indexes works better in low-cardinality columns, what concept am I missing here?

Thanks,

DBABR

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