1. TPS (Transaction Processing System).
The transaction processing system records the data from everyday operations throughout every division or department in the organization. Each division or department is tied together through the TPS to provide useful information to management levels throughout the company. It used by Supervisior (lower/operational manager) to monitor operational everyday.
2. MIS (Management Information System).
MIS is an integrated collection of people, procedures, databases and devices that provides managers and decision makers with information to help achieve organizational goals. The function of MIS is to help an organization achieve its goal by proving manager with information. MIS take the data and make decision to get reports (output) like summary, demand, periodic. It used by middle manager (tactical Decision).
3. DSS (Decision Support System).
An organized collection of people, procedures, software, databases and devices used to support problem-specific decision making. It is used for complex "what-if" questions that require internal and external data. Decisions at this management level are mostly complex. Same like MIS, DSS systems are used by middle manager (tactical) to solve specific problems in organization.
4. ESS (Expert Support System).
An Executive Support System (ESS) is software that allows users to transform enterprise data into quickly accessible and executive-level reports, such as those used by billing, accounting and staffing departments. An ESS enhances decision making for executives.
Sharing the same concepts of a DSS, an ESS focuses more in the end-user requirements of maximum interactivity and user-friendlyness. An ESS can be understood as a friendly, fully customised and interactive DSS to be mostly used by top executives and policy-makers to get permanent and updated assessment in relation to key questions (information and knowledge).
