Alliance Supermarket Case Study Alliance Supermarket and Point-of-Sale (POS) Systems Read the Alliance Supermarket case study in Chapter 10 of your text. Alliance Supermarkets has been using a point-of-sale (POS) system for some time to track its inventory. The system uses a laser scanner to read the universal product code (UPC) on each item at the checkout container. The UPC is a number that uniquely identifies the product on which it appears. Currently, Alliance is using the UPC information to update inventory records for each item. Although the system has greatly improved the companys ability to replenish inventory promptly, the company still has some problems. For example, sudden changes in demand for a particular item can catch the company by surprise as it bases...