Data Warehousing - 3. ISYS 650. Snowflake Schema one or more dimension tables do not join directly to the fact table but must join through other dimension tables. Location Dimension LocationCode State City. CustomerRating Dimension Rating Description. FactTable LocationCode
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Can group by State, City
1. Rows - possible values of the attribute
2. Columns - table rows
3. Bit indicates whether the attribute of a row has the values
The bitmap index is used where the values of a field repeats very frequently(not many distinct values), it is not used for primary key index.