1. Houston Petroleum Valve Company Data-Mining Project Data Modeling Phase Fouad Alibrahim Mohammad H. Monakes University of Houston Clear Lake University Summer 2006

2. Summaries of the Collection A total of around 20,000 records were collected from the data repository. Total Sales = 12 Million $ Total Cost of Goods Sold = 8.4 Million $ Total Customers = 1,023 Total Sales People = 42 Total Employees in Customer Service, Sales and Accounting departments = 85

3. Data Cleansing Three methods of cleansing were done on the data. – Attribute-oriented Induction, removal and generalization of attributes. – Removal of weakly related attributes. – Removal of invalid records. – Camouflaged key identity fields.

4. Data Warehouse DW consists of five dimension and one fact table created in a star schema. – Sales table (fact table) – Customer table – Salesperson table – Time table – Item table – Location table

5. Measurements

6. Star Schema

7. Aggregation Location City State All Locations Item Item Key Item Type All Items Time Date Month Quarter Year

8. Q & A …