MIS Second, management information systems in the enterprise an important role in modern management (A) management information systems for enterprise management and scientific decision- making plan The use of management information systems, not only communication between the corporate sector, communication between employees and employees more easily transfer information between upper and lower layers more quickly and more easily collect customer demand information, competitor information and other market information is conducive to production planning and sales plan development. A variety of reference data for granted, to an unprecedented level of leadership to improve the decision- making, to &quot;devise strategies within successful in distant&quot; effect. (B) management information systems to optimize the functions of business management organization Management information systems to a certain stage will inevitably lead to changes in enterprise management mechanism and business process reengineering; Furthermore, management information system itself is an advanced management thought of the carrier, which requires enterprises to adjust the corresponding organization or business process reorganization. This interaction will help both companies to &quot;reengineering&quot; and &quot;management remodeling.&quot; From business process analysis to business process reengineering, reducing circuitous, eliminate delays and improve efficiency. (C) management information systems for enterprise management, leadership roles to play. Management information system is becoming an important strategic tool for business management and corporate culture. Multimedia and integrated services digital network (ISDN) use, enterprises can make sound, images and Wenzilaijin to or remote Kong Zhi Sheng Chan products or services available by the process, Congerjianshao product of poor rate and increase the level of Guke of Man Yi. Through the computer network and the applications that run on it, can efficiently and easily, to manage cross-boundary economic branch. (D) management information system to support implementation of enterprise management and control functions. Management information systems for the various different management levels of control all OK Zhi Chi: The operating level is ensure that the work Youxiaoshishi; on the tactical level is to keep up the actual operating information, the actual working conditions compared with Jihua analysis requirements and provide all possible solution; on the strategic level is to analyze and provide a variety of vertical and horizontal data, predict the future, supporting development of a strategic plan. Enterprise management control of some of the more important in the management information system can help to achieve, such as inventory control (weight control, timing control, etc.), quality control (scatter), behavior control, production schedule control, cost control, financial budget control. [Social challenges faced by information systems] ?A profound understanding of how management information system is not only a technical system, but also a social system. It is increasingly profound understanding of information technology application and application environment are inseparable. Management information system is not only a technical system, but also of the social system. Promote changes in management information systems as if to promote social change. MIS technical complexity, needed resource- intensive and the diversity of user needs only one aspect of the problem, but more importantly, were involved in management thinking, management systems, management methods, power structure and change people&#39;s habits. This is in the process of development and implementation of MIS to be a very clear understand ing of key issues. 2 How to improve the scientific management level, for the information system to create favorable conditions. Only the input data is very reliable and useful management information can be obtained. To improve management of solid scientific, as to create conditions for the development of information systems. 3 how to use information technology to promote the organization and management. Information technology leap, are driving profound changes in organization and management. Such as restructuring process, new division of labor, re-division of powers, re-organization design, and even past service location, time, the relative location of desks, also may make a great adjustment. 4 How to improve the organization&#39;s level of education, training a new generation of staff, to adapt new technology and business transformation challenges. People are the most positive factor, human quality and cultural level of the efficiency of information activity plays a decisive role. To this end, raising the cultural level of organization, preparation and training of personnel selection has important strategic significance. 5 government departments to promote the application and development of information systems. The development of information systems management to the government has put forward higher requirements. Commercialization of information technology results in a considerable extent, also affected by the exchange of information throughout the community environment. Government departments should actively promote the network construction, development of national information infrastructure facilities, create an open information environment, promote information sharing, strengthen information Biaozhun Hua Gong Zuo, Guli between organizations, 行业 rivalries and cooperation. ?[Information System technology challenges facing] A cross-platform run: for the organization based on business needs and the ability to choose the best platform for investment and to help organizations successfully achieve the level of different stages of application of smooth transition. 2 supports a variety of applications, data exchange: information system can compete with the existing system for data exchange and integration, and thus the effective use of existing information resources and investment. 3, high level of system integration: the data into the system to a pre-set and management of the internal rules and links to related transfer function module to achieve a high degree of data sharing and highly integrated system. 4 highly modular: the analysis of the system design and development process, ensure that all subsystems, each subsystem of the function of a high degree of modularity, in order to achieve the freedom of the system, cutting and re-configuration. 5 Distributed Application System: Support for distributed applications and distributed database. More than six language support, and personalized user interface: In accordance with the user&#39;s settings, the user interface in different languages sho w different application interfaces, while users can set their own individual user interface. 7 high reliability and safety: the remote communication line failure, multi- user operation conflict, sharing a large number of distribution and transmission of da ta, with strong stability; ultra vires action against hackers and other sound line of defense. 8 support organizations in the work process definition and re: outside the organization continue to adapt to environmental changes, Nenggou to support small to re-definition of a business, Da to combinations involving organizations, separation, reorganization Yiji virtual organizations Chongzucaozuo. 9 to support intelligent information processing capabilities, achieve operational functions of filtering, optimization and recovery plans can turn data analysis. 10 scalable business framework and standards for external interfaces: the ability to adapt to the development of management thinking, customer needs change and diversity, to facilitate redevelopment. 11 to support the wider use of the interface: In addition to support for fixed and mobile computers, the can support a wider range of digital terminals. System is divided into general principles: 1. Subsystems to have relatively independent Subsystem to make the division of the internal functions of subsystems, information and other aspects of cohesion is better. In practice, we want independent of each subsystem or module, as to minimize unnecessary data, call and control links. And closer contact, the relative concentration of functional modules similar, so the subsequent search, queries, debugging, calling more convenient. 2. For the data dependence between subsystems as small as possible The links between subsystems to minimize the interface simple and c lear. A strong internal link external link subsystem must be relatively small. So when will contact more division are assigned to the internal subsystems. This division of the subsystem, the future commissioning, maintenance and operation are very convenie nt. 3. Subsystem results should make the minimum data redundancy If we ignore this problem, it may cause relevant functional data are distributed in various subsystems, the large amount of raw data need to call a large number of intermediate results need to preserve and pass, a lot of calculation will be repeated. Disorder which makes the program structure, data redundancy, not only to the software development work of great difficulty, and the system&#39;s efficiency is also greatly reduced. 4. Subsystem set to consider the future needs of the development Subsystem, the system analysis of the results set alone is not enough, because the existing system, because this or that reason, it may not take into account a number of high- level management decision- making. In order to adapt to the development of modern management, the old system of these shortcomings, the new system&#39;s development process should seek to fill on it. Is the only way the system is achieved not only more accurate and reasonable to complete the existing system of business, and can support a higher level, deeper management decisions. 5. Subsystems division should facilitate a phased implementation Information systems development is a large project, it generally must be phased different steps to achieve. Therefore, the division of subsystems such requests should be considered, to adapt to this stage step by step implementation. In addition, the sub division of the organization must also take into account the requirements of (but not entirely dependent on the organization, because the reforms are under way, the organizational structure is relatively unstable), so that the system can meet the current realization of the situation after and people&#39;s habits, better run. Factors that affect the information value of a. Second, the concept of information value. Decision makers to respond to the actions of information and enthusiasm. The value of information also depends on how decision makers view the role of information, and information researchers the ability to form an effective program. 3. Accuracy of the information. The accuracy of information is the key to the value of information, false information will be worthless, and will further harm to the corporate decision- making. 4. Timing information. Emphasizes the time value of information. With the development of communication technology, information exchange in the rapid increase in the speed and quantity, who first obtained the information who will grasp the initiative in competition. 5. Information value of the target. Value of information need to reflect the actual demand. 6. Information, news and knowledge 7. Lack of information generated by the degree of non-deterministic eight. Policy makers of risk aversion. The value of information and decision- makers the degree of risk aversion, risk aversion are generally wish to be sufficient information to ensure the correctness of nine decisions. Competitors on the decisions made by the response information Business process diagrams and data flow diagram of the connection is that both are to use the computer information management. Management of business processes should be investigated in accordance with the original survey the flow of information, one by one to investigate all aspects of processing operations, processing contents, processing order, and processing time requirements, identify all aspects of the required information, information sources, flows through the trend , treatment methods, computational methods, time and information to provide information 〔report form, declaration, display, and. Management business flow chart is a description of the various units within the system, relationships among business, work order and management information flow charts, use of personnel it can help identify the business processes of the non-convergence arguments 向. Data flow diagram is a kind of information system can fully describe the logical model to the main tool, which can be used to reflect a small number of several symbols for the flow of information in the system, processing and storage Xing conditions. Data flow diagram with abstract and general. Abstraction: the performance of specific substances in the rounding, only the data flow, processing and storage; Overview of: information can be expressed in a variety of different business processes linked to form a whole. Business process diagrams and data flow diagram of the difference is that the investigation process management business management b usiness process diagrams drawn distribution maps and tables although the image expresses the flow of information management and storage process, but still not completely out of some material elements . The flow chart of discarding the material elements of the data, collect information and draw the original system data flow diagram. China resident identity card number is also in a range code. The advantage of interval code code number represents the value and location of a certain sense, more reliable information processing, sorting, classification, retrieval operations 易于 out, the code length related to the number and classification of property may sometimes Zaocheng very long code . ?
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