2. Business Background AT&T Inc. is an American multinational telecommunications corporation. AT&T is the second largest provider of mobile telephone in the united states. It is spread across various wireless communication sectors which includes voice, data, internet and networking.

3. Business Needs What type of customers to target based on demographic segmentation What bundled/mobile plans sell the most in each region? We would know what types of bundles to provide in each region. Quarterly and Yearly Sales and Usage reports based on various demographic factors. Region wise sales data to implement new stores. To study usage patterns of customers and formulate plans. To find new clients. Assess Product Demand. Revenue/Accounting Reports. Formulate Future Plans based on customer feedback.

4. Business Dimensions TIMECUSTOMERS PRODUCTS  Day  Month  Quarter  Year Age Sex Profession Product ID Type Name Price  Type  Measure  Description  ID  State  City  Zip Code Usage Type Stores

5. Fact Tables Sales_Revenue Usage

6. Customer_Address Dimension Table Customer Dimension Table

7. Date_Time Dimension Table Product Dimension Table

8. Store Dimension Table Usage_type Dimension Table

9. Sales_Revenue Fact Table Usage FactTable

10. Multi Dimensional Model

11. Sales Reports by month, quarter, or year. Select sum(Quantity/Price) from sales_revenue sr,date_time dt where sr.time_id=dt.time_id and dt.month=? And dt.year=?; Usage Reports based on age, sex and profession. Select sum(usage_quantity) from usage u, customer c, cust_address ca where u.customer_id=c.customer_id and ca.customer_id=c.customer_id and ca.age=? And ca.sex=?; Revenue Reports by city and state. Select sum(price) from sales_revenue sr,stores s where sr.store_id=s.store_id and s.city=? And s.state=?;