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Understanding of Information System

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Introduction Understanding of Information System WHAT IS INFORMATION SYSTEM Information System (IS) defined by Kenneth C. Laudon and Jane P. Laudon as a set of interrelated components that collect (or receive), process, store and distribute information to support decision -making and control in an organization. (Laudon 2004,) This definition of IS illustrates the function of it as providing the information for decision-making and control in an organization through processing the collected data and distributing the produced information. It may also help managers and workers analyze problems, visualize complex subjects, and create new products. With the growth of the Internet, the economic globalization and the rise of information economics, information system plays a more and more important role in the field of business and management. The fast development of Internet technology also accelerates the application of new business models and ways of distributing knowledge. Because of furious competition within the world's business environment, companies need an effective information system to survive and prosper. The role of IS in organizations There are many literature showing the importance of IS in organizations. "Information Systems and technologies have become a vital component of successful business and organizations". (James A.O' Brien, 2000 P4). "Information systems are an integral of organizations" (Laudon 2004 P13). The same person, Laudon, says: "from a business perspective, an information system is an important instrument for creating value for the organization" In my opinion, the IS in Organizations plays a strategic role. James, describes the role of IS in organizations in his book Introduction to Information Systems. In organizations, IS can help companies extend their reach to faraway locations, offer new products and services, reshape jobs and work flows, and perhaps profoundly change the way they conduct business. Information systems perform three vital roles in any type of organization. ? Support of its business processes and operations ? Support of decision making by its employees and managers ? ...read more.


System operations is a general term that encompasses a variety of activities and issues. In Vladimir Zwass's Management Information systems (1992), he described the SDLC in the following several steps: Systems Analysis Stages, Systems Design Stages, Programming, Conversion, Postimplementation. Which is more or less the same as the above steps. Besides the DSLC, many easy-to-maintain systems are produced to help speed the development process and to help ensure that high quality. Such as Visual Analyst Workbench, Rational Rose, and System Architect. These can be classified under the general heading of computer-aided systems engineering (CASE) tools. (Ronal T, William Cats-Baril 2003) In Turban, Rainer, Potter's Introduction to Information Technology we can find some other methods for System Development. Such as Prototyping, Joint Application Design, Rapid Application Development, Integrated Computer-Assisted Software Engineering Tools and Object-Oriented Development. The tangible and intangible costs & benefits In general, the tangible (easy-to-measure) costs include costs of software licenses, computing hardware, information systems personnel, maintenance contracts, training costs, communications costs, and so on. The intangible (hard-to-measure) costs include the time it will take employees to learn how to use the new system, the potential disruption to operations during the conversion from the old to the new, a potential drop in morale, and so on. Very often, the intangible costs are substantially underestimated. The tangible benefits are those that ca be readily quantified and expressed in monetary terms. Often the tangible benefits are considered more in terms of cost avoidance than of cost reduction. Obviously, the expected or claimed benefits must be examined closely. The intangible benefits, oppositely, are more difficult to quantify, but it is important to avoid the temptation to simply list a number of potential intangible benefits without attempting to quantify them. (Ronald. P & William Cats-Baril2003) There are many types of Information Systems when classified in different ways. After considering the general concepts, I will explore a IS example in the following paragraphs. ...read more.


It is the free software, which is a matter of liberty. It provides free access to its program code, allowing people to modify the program code to make improvements or fix errors. Nowadays, open source has become a key factor of the technology development. People put their source on the Internet and allow them to be used or amended by other people, so their soft can be improved quickly. However, it also has some defects. There are two areas of the software industry that open- source will be difficult to cover. One is enterprise software that relates to a company's core activities. Companies will hesitate to bet their business on free software. Open-source is extremely good at optimizing existing programs, says Ray Ozzie, chief executive of Groove Networks and creator of the popular Lotus (Carol Sliwa 1997) It is not practical for them to spend most of their working time on solving the computer problem, There is a trend that software is moving to open standard, however there are still some way to go. Understanding of Information Technology WHY SHOULD YOU LEARN ABOUT INFORMATION TECHNOLOGY? We live in the digital age, and that the ways we live and do business are changing drastically. The field of IT is also growing rapidly, especially with introduction of the Internet and EC,, so the organizational impacts keep increasing. The role of IT is a facilitator of organizational activities and processes. That role will become more important as time passes. Therefore, it is necessary that every manager and professional staff member learn about IT not only in his or her specialized field, but also in the entire organization as well as in interorganizational settings. The terms 'information systems' (IS) and 'information technology' (IT) are often used interchangeably. This is an error, because the scope of the terms is different. The stress in IT is on the technology while IS not only refers to the technology, but also incorporates how it is applied and managed to contribute to the business. (Paul Bocij, Dave Chaffey, A.Greasley, S. ...read more.

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