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The main task of system analysis is to gather the documents obtained in the detailed investigation of the system together and analyze the overall management status and information processing process within the organization. It focuses on analysis from the perspective of the whole business process.

The main tasks of the system analysis stage are as follows: it is divided into five stages: planning stage, analysis stage, design stage, implementation stage, maintenance and evaluation: planning stage.

The tasks to be completed in the system analysis stage are as follows: system overview, system goals, scope, background, history and current situation. The purpose of systematically explaining the object of research and the problems that need to be solved is to determine the goal and explain the focus and scope of the problem.The principle and technology of the system, the improvement of the original system.

The task of managing information system analysis, feasibility analysis and detailed investigation overview, feasibility analysis, the task of feasibility analysis is to clarify the necessity and feasibility of the development of the application project. The necessity comes from the urgency of realizing the development task, while the feasibility depends on the resources and conditions to realize the application system.

The main task of the system analysis stage is to finally complete the logical scheme design of the new system through problem identification, feasibility analysis, detailed investigation and systematic analysis. After the system analysis, the system design will be carried out and then the system will be implemented.

What six stages does the Nolan stage model divide the information system into?

1. The six stages of Nolan's model are: initial stage, propagation stage, control stage, integration stage, data management stage and maturity stage. The first stage is the initial stage. The organization has introduced data processing systems such as managing accounts receivable and wages, and experts from various functional departments (such as finance) are committed to developing their own systems.

2. [Answer]: B The main knowledge point of this question is the Nolan model.The six stages of the Nolan model are budding, diffusion, control, integration, data management and maturity stages. The answer is B (5P177).

3. Year, Nolan divided the development path of computer information system into six stages. Nolan stressed that any organization must develop from one stage to the next when implementing a computer-based information system, and cannot achieve leapfrog development.

4. A leading group has been established; database (DB) technology has been adopted; this stage is the key to computer management becoming data management. Unification stage On the basis of control, the enterprise begins to re-plan and design, establish a basic database, and build a unified information management system.

Briefly describe the five stages of the development management information system according to the life cycle, and the main tasks to be completed...

Planning stage The task of the system planning stage is to put forward the requirements for the development of a new system on the basis of a preliminary investigation of the original system, and give a new system according to the needs and possibilities. Unify the overall plan, and conduct a feasibility analysis of these plans, and produce two documents, the system development plan and the feasibility study report.

The life cycle method is divided into 5 stages, namely: requirements analysis, design, implementation, operation and audit. I: Demand analysis stage Demand analysis is to determine the needs of the enterprise and reflect these requirements into the requirements specifications of the information system. The requirements analysis stage is mainly a new system logic model established to meet the needs of users.

The software life cycle is divided into five stages: problem definition, feasibility study, requirements analysis, development stage and maintenance. The main tasks of each stage are as follows.

System design stage. In the system design stage, the implementation plan of the information system is designed according to the results of system analysis. The main contents of system design include system architecture design, database design, processing process design, functional module design, security control scheme design, system organization and team design, system management process design, etc.

How to understand the important role of the system planning stage in the process of system development?

1. In the development process of the database application system, the result of each stage is to write the corresponding documents.Each stage is carried out on the basis of the results of the previous stage, and the whole development project is carried out in a well-founded, organized, planned and methodical manner. The main task of planning is to analyze the necessity and feasibility.

2. "The only thing that remains unchanged is the change itself". Similarly, software requirements are constantly changing and deepening in the development process of software love you. Therefore, we must customize the requirements change plan to cope with this change in order to protect the normal progress of the whole project.

3. In the initial stage of any software or system development, user needs must be fully grasped first, in order to prioritize which functions should be implemented, what specifications should be adopted, and what restrictions should be set in the following system development process.

4. The importance of planning in project management plays a strong role in promoting project management.The successful completion of a job is inseparable from a good plan. Project management in engineering design and strengthening plan control are the basic models in modern management. By strengthening the planning control of project management, all projects can be fully controlled.