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 Table Hierarchies

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

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

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

Data Warehouse Dimension Tables Order Table Product Table Promotion Card Table Store Table Time Table

Data Warehouse Star Schema

Data Warehouse Snowflake Schema

Data Dictionary Sales Fact Table Product Category Table

Data Dictionary (Cont’d) Product Table Vendor Table

Data Dictionary (Cont’d) Order Table Store

Data Dictionary (Cont’d) Promotion Card Table Region Table

Data Dictionary (Cont’d) Time Table Quarter Table

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

Information Package

Dimensional Hierarchy

Order Hierarchy 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

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

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

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