The solution is an obvious one. Convert (denormalize) (My space web page)
The solution is an obvious one. Convert (denormalize) a normalized snowflake schema into a star schema, as shown in Figure 7-6. In Figure 7-6 the PUBLISHER and PUBLICATION tables have been denormalized into the BOOK table, plus the CATEGORY table has been denormalized into the SUBJECT table. Figure 7-6: A denormalized SALE table fact-dimensional structure. A more simplistic equivalent diagram to that of Figure 7-6 is shown by the star schema in Figure 7-7. Sale sale_id ISBN (FK) author_id (FK) shipper_id (FK) customer_id (FK) subject_id (FK) sale_price sale_date Customer customer_id customer address phone email credit_card_type credit_card# credit_card_expiry Shipper shipper_id shipper address phone email Author author_id author Book ISBN publisher title edition# print_date pages list_price format rank ingram_units Subject subject_id category subject 180 Chapter 7
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