What are the classifications of information systems?

Information systems are divided into three categories: transaction processing systems, management information systems, and decision support systems.

(1) Transaction processing system (TPS) is mainly used to support the daily activities of operation level personnel.

(2) The management information system (MIS) needs to include the transaction processing system in the organization and provide data in an internal integrated form, as well as general and large-scale data from the external organization.

(3) Decision support system (DSS) can obtain information from the management information system and help managers make good decisions.

Information system (Information system) is a human-machine integrated system composed of computer hardware, network and communication equipment, computer software, information resources, information users and rules and regulations for the purpose of processing information flow.

A complete MIS should include: Decision Support System (DSS), Industrial Control System (CCS), Office Automation System (OA) as well as database, model library, method library, knowledge base and communication with superior agencies and An interface for exchanging information with the outside world. Among them, especially the office automation system (OA) and the exchange of information with higher-level agencies and the outside world are inseparable from the application of Intranet (enterprise intranet). It can be said that modern enterprise MIS cannot be without intranet, but the establishment of intranet must rely on the architecture and software and hardware environment of MIS.

The core of the traditional MIS system is the CS (Client/Server - client/server) architecture, while the core of the Internet-based MIS system is the BS (Browser/Server - browser/server) architecture. . The BS architecture has great advantages over the CS architecture. The traditional MIS system relies on a specialized operating environment, which means that the operator's activity space is greatly restricted; while the BS architecture does not require a specialized operating environment and can be used anywhere. In any place, as long as you have access to the Internet, you can operate the MIS system. The difference between the advantages and disadvantages is self-evident.

The five basic functions of information systems: input, storage, processing, output and control.

Input function: The input function of the information system is determined by the purpose of the system and the capabilities of the system and the permission of the information environment.

Storage function: Storage function refers to the system’s ability to store various information materials and data.

Processing functions: Online Analytical Processing (OLAP) and Data Mining (DM) technology based on data warehouse technology.

Output function: Various functions of the information system are designed to ensure the ultimate implementation of the best output function.

Control function: Control and manage various information processing equipment that constitute the system, and control the entire information processing, processing, transmission, output and other links through various programs.