At the specified time, stop using the original system and start the new system. The advantage of this conversion method is that the conversion process is simple and fast, and the use cost is very low. The disadvantage is that it is risky to use this conversion method, which is only suitable for the update of small information systems.
2. Parallel transformation method.
The disadvantage of this method is high cost, and the advantage is safety insurance, which is suitable for medium and large enterprises and financial management systems and can save more data that may be lost.
3. Pilot transition method (subsection conversion method).
The advantages of this method are simplicity, safety and low cost, but the disadvantage is that there may be conflicts between the old and new systems. The general information management system suggests using this method to update the system. Suitable for switching of large-scale important systems.
Extended data:
Systematic action
1. Management information is an important resource
For enterprises, people, things, energy, capital and information are five important resources. People, materials, energy and capital are all visible tangible resources, while information is intangible resources. In the past, people paid more attention to tangible resources. After entering the era of information society and knowledge economy, information resources have become more and more important.
Because information resources determine how to use material resources more effectively. Information resources are the crystallization of knowledge acquired by human beings in their struggle with nature. Mastering information resources can make better use of tangible resources and make tangible resources play a better role.
2. Management information is the basis of decision-making.
Decision-making is to make correct judgments and decisions by understanding the objective situation, external situation, external situation and internal situation of the enterprise. Therefore, decision-making and information are closely related. In the past, some decisions based on experience or slapping one's head often led to decision-making mistakes, and it became more and more clear that information was the basis of decision-making.
3. Management information is the basis of implementing management control.
In management control, information is used to control the operation of the whole production process and service process, and the existing plan is constantly revised through information feedback, and management control is implemented through information. There are many things that can't be well controlled, and the root cause is that we don't have a good grasp of comprehensive information.
4. Management information is the link inside and outside the organization.
The contact between enterprises and the outside world, as well as the contact between functional departments within enterprises, is also communicated with each other through information. Therefore, to communicate with various departments and make the whole enterprise run in harmony, we must rely on information. Therefore, it is the link between internal and external communication of the organization. Without information, it is impossible to communicate internal and external contacts and work together well.
Baidu Encyclopedia-Management Information System