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Apex Supermarket Data Warehouse

Apex Supermarket Data Warehouse. Presentation 2: Data Modeling. Presented By: Khalid Nour Muhammad Rizvi Raghuram Vempali Surekha Vemuri. Outline. Background Business Need Fact Table Dimension Tables Star Schema Snowflake Schema Data Dictionary Information Package

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Apex Supermarket Data Warehouse

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  1. Apex Supermarket Data Warehouse Presentation 2: Data Modeling Presented By: Khalid Nour Muhammad Rizvi RaghuramVempali SurekhaVemuri

  2. Outline • Background • Business Need • Fact Table • Dimension Tables • Star Schema • Snowflake Schema • Data Dictionary • Information Package • Table Hierarchies

  3. Background • Apex Supermarket is a supermarket chain with 4 stores in South Texas, Central Texas, North Texas and East Texas • They have stores in: • South Texas: Laredo • Central Texas: Midland • North Texas: Denton • East Texas: Houston

  4. Business Need • Help executive staff study the sale of products by Categories, Regions, States, Cities, Stores, and Time • Executive Staff will be able to figure out sales revenue through the different dimension combinations • Give strategic information for the Executive Staff to make decisions on optimizing prices of products

  5. Data Warehouse Fact Table • Sales Fact Table • Keys • OrderID • CardID • ProductID • DateID • StoreID • Non-Key Columns • TotalSales • TotalCost • Gross Profit

  6. Data Warehouse Dimension Tables • Order Table • Product Table • Promotion Card Table • Store Table • Time Table

  7. Data Warehouse Star Schema

  8. Data Warehouse Snowflake Schema

  9. Data Dictionary • Sales Fact Table • Product Category Table

  10. Data Dictionary (Cont’d) • Product Table • Vendor Table

  11. Data Dictionary (Cont’d) • Order Table • Store

  12. Data Dictionary (Cont’d) • Promotion Card Table • Region Table

  13. Data Dictionary (Cont’d) • Time Table • Quarter Table

  14. Data Dictionary (Cont’d) • Day of Week Table • Month Table • Year Table

  15. Information Package

  16. Dimensional Hierarchy

  17. Invoice Number Date Ordered Date received Package cost Size Small (1-3 billion turnover) Medium (4-10 billion turnover) Large (>11 billion) Type Organic Vendor Traditional Vendor Category produce beverages staples spices canned baby condiments paper cleaning personal Frozen diary Order Hierarchy

  18. Store Hierarchy • Store name • City • State • Zip • Regions • South Texas • Central Texas • North Texas • East Texas Each store location is in one region

  19. Date Day of Week Quarter Year Quarter Values Quarter I January February March Quarter II April May June Quarter III July August September Quarter IV October November December Time Hierarchy

  20. Product Hierarchy Products Categories canned baby condiments paper cleaning personal frozen diary Produce Beverages Staples spices Fruits Sodas Cereals Seasoning Olives Diapers Ketchup Plates Bleach Shampoo Broccoli Eggs Beans Milk Veggies Juices Bread Salt/pepper Beans Wipes Mayo Cups Detergent Conditioner Peas Water Grits Soups Formula Salad dressing Napkins Dish liquid lotion Cheese Corn Alcohol Baby food Olive oil bags Shaving cream wipes Potatoes Baby water Spinach

  21. Any Questions?

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