-
Anonymous users2024-02-07The beginning of the generation of information + the stage of information value + the elimination of information The whole stage.
-
Anonymous users2024-02-06The life cycle of an information system.
It can be divided into four stages: project establishment, development, operation and maintenance, and extinction.
1) Project establishment stage: that is, the concept stage or the demand stage. At this stage, according to the needs of user business development and operation management, the preliminary idea of building an information system is proposed; Then, the requirements of the enterprise information system are investigated and analyzed in depth, and the "Requirements Specification Specification" is formed and the project is determined.
2) Development stage: Based on the demand analysis done in the project approval stage, the overall planning is carried out. After that, the system is delivered through system analysis, system design, system implementation, system acceptance, etc.
3) Operation and maintenance stage: After the information system passes the acceptance and is officially handed over to the user, it enters the operation and maintenance stage. System O&M.
It can be divided into 4 types: corrective maintenance, adaptive maintenance, perfection maintenance, and preventive maintenance.
4) Extinction stage: Information systems will inevitably encounter system renovation, function expansion, and even abandonment and reconstruction. In this regard, in the early stage of information system construction, we should pay attention to the conditions and timing of the system's demise, as well as the cost incurred therefrom.
-
Anonymous users2024-02-05The concept of the life cycle of a management information system
Life cycle: After a system has been used for several years, people may have put forward new goals and new banquet requirements due to new circumstances and new problems, so as to require the design of an updated system. This cyclical, cyclical process is known as the life cycle of the system. Bucket rolling.
-
Anonymous users2024-02-04The life cycle method, also known as the structured system development method, is a popular information system development method at home and abroad, which has been widely used and promoted in system development, especially in the development of complex large systems, showing incomparable advantages. It is also by far the most widely used and mature of the development methodology. 1 Basic Idea:
The theories and methods of engineering and systems engineering are introduced into the research and development of computer systems, and the system is analyzed and designed in a structured and modular top-down manner according to the principle of user first. Specifically, it divides the entire information system development process into six separate phases, including system analysis, programming, system testing, operation and maintenance, and system evaluation. These six phases make up the life cycle of an information system.
2. Advantages and disadvantages The outstanding advantage of the life cycle method is that it emphasizes the integrity and overall situation of the system development process, and emphasizes the consideration of specific analysis and design problems under the premise of overall optimization, that is, the top-down perspective. It breaks down development and maintenance into phases from a temporal perspective, each with its own relatively independent tasks and goals. Reduces the complexity of system development and improves operability.
In addition, the results of each stage are strictly approved, and problems are found to be fed back and corrected in a timely manner, which ensures the quality and especially improves the maintainability. The life cycle approach has proven to greatly improve the success rate of development. However, the development cycle of the life cycle method is long, because the development sequence is linear, the work of each stage cannot be carried out at the same time, and the mistakes made in the previous stage will inevitably be carried over to the later stage, and the more the mistakes made in the previous stage have a greater impact on the later work, the greater the amount of work required to correct the mistakes.
In addition, when functions are constantly changing, it is difficult to adapt to changing requirements, and repeated development is not supported.
-
Anonymous users2024-02-031.Collection of Information.
2.Transfer of Information.
3.Processing of information.
4.Storage of Information.
5.Maintenance of information.
6.Use of Information.
1. Administrative management learning courses.
Municipal Science, Management Originals, Administrative Secretary and Official Document Writing, Public Organization Behavior, Urban Management, E-Government and Office Automation, Social Survey and Statistical Analysis, Administrative Law and Administrative Litigation, Social Security System, Principles of Public Administration Some colleges and universities are trained in the following professional directions: civil servants, e-government, police management, administrative secretaries, financial assistants, human resource management, foreign-related administrative management, foreign-related economic affairs management, public cultural services and management, public policy and governance. >>>More
Abbreviation for Information Management and Information Systems Major. This major focuses on the basic theories and methods of information management and information system analysis, design, implementation, management and evaluation. In layman's terms, it is to discover wealth from information. >>>More
in managementThe principle of wooden barrelsIt refers to a bucket composed of multiple wooden planks, and its value lies in the amount of water it holds, but the key factor that determines the amount of water in the bucket is not its longest plate, but its shortest plate. That's itIt is said that any organization may face a common problem, that is, the various parts that make up the organization are often uneven, and the inferior parts often determine the level of the whole organization >>>More
1. Strategic management is the main form of resource allocation. >>>More
Major in agriculture and forestry economics and management? It's the Agricultural University, or it's the Institute of Finance, I graduated from the Agricultural Economics and Management Department of the Institute of Finance, and now it is said that it has been changed to the major you are talking about, 30 people in our class are now graduating and doing what they do, to be honest, there is no one engaged in the work related to this major, bank teachers, accountants, sales have to do anything, the key depends on how you position, don't be swayed by the major you are studying, in fact, many majors have no direction, the major is only related or related, At that time, I went to Cody at that time and went to Shuanghui, and agriculture feels a little related, in fact, you will find that it doesn't have much to do with the work, what you learned in college is a way of thinking rather than book knowledge that has no practical use, unless most of those majors with strong professionalism such as science and engineering, well, don't say much, pack yourself how to find a job, in short, the future is bright and I wish you good luck.