Data Analyst by Rune Rasmussen
Author:Rune Rasmussen [Rasmussen, Rune]
Language: eng
Format: epub
ISBN: 9781780174334
Publisher: BCS Learning
Published: 2019-03-15T00:00:00+00:00
A popular method of logically organising systems that have been modelled in this way is to create a star or snowflake schema, as shown in Figure 3.6.
WHAT ARE STAR AND SNOWFLAKE SCHEMAS?
The star and snowflake schema model for data marts was developed and promoted by Ralph Kimball. The star schema is a simplified and more commonly used version of a snowflake schema where there is only one layer of dimension tables around the fact table (see Figure 3.6). When there are dimension tables around the dimension tables it becomes a snowflake schema.
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