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Saturday, 2 June 2012

When should you use a Star and when should you use Snowflake Schema

Q: When should you use a Star and when should you use Snowflake Schema ?

Star Schema :  If the performance is the priority Than go for Star Schema, Since here dimension tables are denormalized.

Snowflake Schema : If memory space is the priority than go for Snowflake Schema, since here dimension tables are normalized.

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