Data Warehouse Project Implementation Presented by: Mike Ellis Vinh Ngo
Type of Business Texas HVAC/R wholesaler 30 branch locations Sell predominantly to licensed contractors, mostly on store accounts 16,000 line item products 700 active stocking manufacturers
Dimension Tables Product Store Time Customer ProductID (PK) ProductName Category Subcategory Store StoreID (PK) StoreName StoreRegion StoreState StoreCity StoreFootage Time TimeID(PK) TimeDate DateText DayOfWeek WeekDay DayOfMonth MonthNum MonthText Quarter Season Year Customer CustomerID (PK) CompanyName LicenseType Size
Fact Table SalesFact ProductID (PK) TimeID (PK) StoreID (PK) CustomerID (PK) Quantity PricePerUnit CostPerUnit
Time Hierarchy Season Values Time Dimension Table TimeID(PK) TimeDate DateText DayOfWeek WeekDay DayOfMonth MonthNum MonthText Quarter Season Year Season Values Winter December January February Spring March April May Summer June July August Fall September October November
Time Hierarchy Clarification One dimension, two hierarchies Date.Calendar Year Quarter Month Day Date.Seasonal Year Season Month Day of the Week
Cube Implementation
Measures by Customer Category
Measures by Customer Category (Specific Product)
Measures by License Type Within Branch & Region
Measures and License Type by Branch Within Region
Calendar Hierarchy Expanded for Measures Within Product Hierarchy
Seasonal Hierarchy Expanded for Measures Within Product Hierarchy
Specific Case I
Specific Case II
Data Mining Does not work for this data Microsoft Decision Trees only works with discrete data Data is a simplified subset of actual data Data is randomly generated
Any Questions? Near Bennington, VT 7/22/06