Difference between Fact table and Dimension table?

In Data Warehouse Modeling, a star schema and a snowflake schema consists of Fact and Dimension tables.

Fact Table:

  • It contains all the primary keys of the dimension and associated facts or measures(is a property on which calculations can be made) like quantity sold, amount sold and average sales.

Dimension Tables:

  • Dimension tables provides descriptive information for all the measurements recorded in fact table.
  • Dimensions are relatively very small as comparison of fact table.
  • Commonly used dimensions are people, products, place and time.

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