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Infosys Engineer Interview Question

I interviewed in Minneapolis, MN and was asked:
"what is star and snowflake schema"
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In computing, a snowflake schema is a logical arrangement of tables in a multidimensional database such that the entity relationship diagram resembles a snowflake in shape. The snowflake schema is represented by centralized fact tables which are connected to multiple dimensions.

The snowflake schema is similar to the star schema. However, in the snowflake schema, dimensions are normalized into multiple related tables, whereas the star schema's dimensions are normalized with each dimension represented by a single table
- ibrahim1105 on Jun 26, 2012 Flag Response

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