1. Introduction
This short Paper presents a simple Proof-of-Concept for Xchanging and Retail to support a simple Data Warehouse and BI Layer.
A typical kind of display requested by users is a Pie-chart.

This example shows four figures � Women�s Wear, Menswear, Children�s wear and Women�s Accessories
The source of the data is Sales Receipts generated in Stores.
This data is stored in a Data Warehouse to provide a Single View of the Truth for the Pie-Charts in the BI Layer.

The Sales Receipts are from a recent trip to Malaysia and are not directly related to the data in the Pie-Chart.

2. Generic Data Architecture
There are many different ways of defining a Data Architecture.
This diagram shows the four major Stages in delivering the �Single View of the Truth� :-