A great example, of using Big Data, is Wal-Mart, which is one of the biggest stores in United States. An effective way of using the Big Data is through their sophisticated process of inventory. Wal-Mart makes sure that each of their stores that she operates, and including warehouses where the product is kept and then distributed directly to the stores, to have a real time point of sale. All the sales that occur in Wal-Mart stores are registered automatically in their database, in order for the sales manager to have an exact overview of what product is sold, which if the most favorite for their customers, what is left on the stock etc. Keeping this control, through this way they know that for example: lets say that a Wal-Mart located in