Nidhi Singh

Nitesh Chilakala

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.

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.

Business Dimensions

TIME CUSTOMERS PRODUCTS

Day Month Quarter Year

• Age• Sex• Profession

• Product ID• Type• Name• Price

Type Measure Description

ID State City Zip Code

Usage TypeStores

Fact Tables

• Sales_Revenue• Usage

Customer_Address Dimension Table

Customer Dimension Table

Date_Time Dimension Table

Product Dimension Table

Store Dimension Table

Usage_type Dimension Table

Sales_Revenue Fact Table

Usage FactTable

Multi Dimensional Model

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=?;