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Difference between star schema and snowflake schema

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Difference Between Star Schema and Snowflake Schema

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Difference between star schema and snowflake schema

  1. 1. Difference Between Star Schema and Snowflake Schema S.No Star Schema Snowflake Schema 1 Data Structure: Data Structure: De-Normalized Data Structure Normalized Data Structure 2 Dimension: Dimension: Category wise Single Dimension Dimension table split into many pieces Table 3 Data dependency & Data dependency & redundancy: redundancy: Less data dependency and No More data dependency and redundancy redundancy 4 Join: Join: No need to use complicated join Complicated Join 5 Query Result: Query Result: Query Results Faster Some delay in Query Processing 6 Parent Table: Parent Table: No Parent Table It may contain Parent Table 7 DB Structure: DB Structure: Simple DB Structure Complicated DB Structure 8 Sample: Sample: http://blog- http://blog- mstechnology.blogspot.in/2010/06 mstechnology.blogspot.in/2010/06/bi- /bi-dimensional-model-star- dimensional-model-snowflake- schema.html schema.htmlAnd, further updates on difference between questions and answers, please visit my blog @http://onlydifferencefaqs.blogspot.in/

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