The next system I regularly used actually is based on information from the TPS. That is the management information system or MIS. The MIS provides the actual performance report for Wal-Mart. This is used by middle management.
A third system that I found very interesting is the decision support system or DSS. The DSS is basically a system to help create a symbiotic relationship between suppliers and retailers and to help the actual stores to make better decisions regarding stocking and marketing. Strategic DSS include sale data warehouse and retail links that consolidate data into very helpful and useful reports that they distribute to suppliers to get the right merchandise