What is an information system? What are the types of information systems?

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.

type

According to the development and characteristics of information system, it can be divided into five types: data processing system (DPS), management information system (MIS), decision support system (DSS), expert system (a subset of artificial intelligence (AI)) 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.

structure

The infrastructure layer of 1 consists of hardware, system software and network that support the operation of computer information system.

The resource management layer includes all kinds of structured, semi-structured and unstructured data information, as well as all kinds of resource management systems for information collection, storage, transmission, access and management, mainly including database management system, directory service system and content management system.

The business logic layer consists of a set of information processing codes that realize various business functions, processes, rules, strategies and other application services.

The application presentation layer closely combines business logic and resources through human-computer interaction, and presents the results of information processing to users in rich forms such as multimedia. [ 1]

characteristic

A perfect management information system has the following four standards: clear information demand, information acquisition and processing, providing information for managers through procedures and management information. Unified planning database is an important symbol of the maturity of management information system, which indicates that management information system is the product of software engineering. Information appreciation is realized by MIS, and data are statistically analyzed by mathematical model to realize auxiliary decision. MIS develops and changes, and MIS has a life cycle.

The development of management information system must have a certain scientific management foundation. Only on the basis of reasonable management system, perfect rules and regulations, stable production order, scientific management methods and accurate original data can the development of MIS be carried out. Therefore, in order to meet the needs of MIS development, enterprise management must gradually improve the following work: (1) Management work is programmed, and all departments have corresponding operation processes; The standardization of management business, each department has corresponding operating norms; Unified report documents, fixed content, time limit and format; Perfection and coding of data.

You can check Baidu, which has a lot of detailed information.