2- systems from a constituency perspective.
systems supporting the decision-making needs of each of the main management groups: Operational management, middle management, and senior management each use systems to support the decisions they must make to run the company. There are four main categories of systems from a constituency perspective:
1- Transaction processing systems (TPS) : is a computerized system that performs and records the daily routine transactions necessary to conduct business, such as sales order entry,, payroll, employee record keeping, and shipping.
This systems serve the operational level of the organization by recording the daily routine transactions required to conduct business, such as payroll and sales receipts. employee record keeping, a and to track the flow of transactions through the organization.