Input function: The input function of an information system depends on the purpose of the system, the ability of the system and the permission of the information environment.
Storage function: Storage function refers to the system's ability to store various information and data.
Processing function: Data processing tools: Online Analytical Processing (OLAP) and Data Mining (DM) technologies based on data warehouse technology.
Output function: The various functions of the information system are ultimately to ensure the best output function.
Control function: control and manage all kinds of information processing equipment that constitute the system, and control the processing, processing, transmission and output of the whole information through various programs.
Information system is a man-machine integrated system, which is composed of computer hardware, network and communication equipment, computer software, information resources, information users and rules and regulations.
According to the development and characteristics of information system, it can be divided into five types: data processing system, management information system, decision support system, expert system and virtual office.
data-processing system
Management information system
decision support system
Expert system: a subset of artificial intelligence
Office Automation and Virtual Office (OA)
According to the hierarchical structure of management, manager information system, marketing information system, manufacturing information system, financial information system, human resource information system and information resource information system can be divided into two levels. This is a logical management information system, rather than a physical management information system, also known as an organization information system.