460 terabytes of data from every single purchase made at the retail chain. The data does not focus on the who the customer is, but what "basket" of goods that the customer purchased. This helps Wal-mart in their approach to aisle layouts and placement of items. A basket can detail your trip around the store and you don't even know you were followed. This data is gather by state, region, etc. Its goal...to manage and tighten its grip on the supply and demand chain... sometimes referred to by Wal-mart suppliers as supply and command.