Role playing dimensions are dimensional structures that are re-used throughout the model. The use of a role playing dimension can simplify model maintenance because only one physical structure is created and it is used many times.
Sales_Header table that has been used in this chapter. It includes three date fields (for
Due Date, and
Ship Date). One date table can be used to reference all three columns.
This workbook model continues with the sales data that has been used so far in this chapter. However, unlike previous models, which focused only on the Sales Amount values that were ordered, we show the value of products that were shipped and delivered.