Snowflake schema is refinement of star schema where some dimensional hierarchy is further splitting (normalized) into a set of smaller dimension tables
(Fig 7), forming a shape similar to snowflake.
of subjects, dimension table
of suppliers (including supplier code, supplier name, location, contact person, telephone, competent department, sales personnel, etc.
After a careful examination of the data required for preparing unit price, the DANUP is designed with 13 tables: six fact tables and seven dimension tables
A dimension table
contains several values that are given an ID, which is used in the fact table instead of all the values.
Together with his colleagues at Metaphor, Kimball designed his first fact and dimension table
data warehouse, which was installed at Clorox in 1984.
Sagent simplifies common loading tasks such as synthetic key generation, key lookup to confirm fact and dimension table
data integrity, and time dimension creation.