Learning Guide
Rationale
Management
Information Systems is a general
name for the academic discipline covering the application
of people, technologies, and procedures collectively, the
information systems to business problems.
This field is directly linked to Management by objectives and to the monitoring of Key performance indicators. It can also help in processing specific information for decision making (for example analyse customer behavior).
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Information Technology Infrastructure
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Information Technology (IT)[1] is concerned with the use of technology in managing and processing information, especially in large organizations.
In particular, IT deals with the use of electronic computers and computer software to convert, store, protect, process, transmit, and retrieve information. For that reason, computer professionals are often called IT specialists or Business Process Consultants, and the division of a company or university that deals with software technology is often called the IT department. Other names for the latter are information services (IS) or management information services (MIS), managed service providers (MSP).
In the United Kingdom education system, information technology was formally integrated into the school curriculum when the National Curriculum was devised. It was quickly realised that the work covered was useful in all subjects. With the arrival of the Internet and the broadband connections to all schools, the application of IT knowledge, skills and understanding in all subjects became a reality. This change in emphasis has resulted in a change of name from Information Technology to Information and Communication Technology (ICT). ICT in Education can be understood as the application of digital equipment to all aspects of teaching and learning. It is present in almost all schools and is of growing influence.
The growth of use of Information and Communications Technology and its tools in the field of Education has seen tremendous growth in the recent past. Technology has entered the classroom in a big way to become part of the teaching and learning process.
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Computer Hardware and Software
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Computer Hardware is the physical part of a computer, including the digital circuitry, as distinguished from the computer software that executes within the hardware. The hardware of a computer is infrequently changed, in comparison with software and data, which are "soft" in the sense that they are readily created, modified or erased on the computer. Firmware is a special type of software that rarely, if ever, needs to be changed and so is stored on hardware devices such as read-only memory (ROM) where it is not readily changed (and is therefore "firm" rather than just "soft").
Software fundamentally is the unique image or representation of physical or material alignment that constitutes configuration to or functional identity of a machine, usually a computer. As a content of memory, software in principle can be changed without the adjustment to the static paradigm of the hardware thus without the remanufacturing thereof. Commonly software is of an algorithmic form which translates into being to a sequence of machine instructions. Some software, however, is of a relational form which translates into being the map of a realization network (see VHDL).
Software is a program that enables a computer to perform a specific task, as opposed to the physical components of the system (hardware). This includes application software such as a word processor, which enables a user to perform a task, and system software such as an operating system, which enables other software to run properly, by interfacing with hardware and with other software.
The term "software" was first used in this sense by John W. Tukey in 1957. In computer science and software engineering, computer software is all computer programs. The concept of reading different sequences of instructions into the memory of a device to control computations was invented by Charles Babbage as part of his difference engine. The theory that is the basis for most modern software was first proposed by Alan Turing in his 1935 essay Computable numbers with an application to the Entscheidungsproblem. [1]
Business Integration
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- This article describes how security can be achieved through design and engineering. Please see the computer insecurity article for an alternative approach that describes the current battlefield of computer security exploits and defenses.
Computer Security is a field of computer science concerned with the control of risks related to computer use.
The means traditionally taken to realize this objective is to attempt to create a secure computing platform, designed so that agents (users or programs) can only perform actions that have been allowed. This involves specifying and implementing a security policy. The actions in question can be reduced to operations of access, modification and deletion. Computer security can be seen as a subfield of security engineering, which looks at broader security issues in addition to computer security.
In a secure system the authorised users of that system are still able to do what they should be able to do. One might be able to secure a computer beyond misuse using extreme measures:
- "[T]he only truly secure system is one that is powered off, cast in a block of concrete and sealed in a lead-lined room with armed guards - and even then I have my doubts." -- Eugene H. Spafford, director of the Purdue Center for Education and Research in Information Assurance and Security.
However, this would not be regarded as a useful secure system.
It is important to distinguish the techniques used to increase a system's security from the issue of that system's security status. In particular, systems which contain fundamental flaws in their security designs cannot be made secure without compromising their usability. Consequently, most computer systems cannot be made secure even after the application of extensive "computer security" measures. Furthermore, if they are made secure, often it is to the detriment of usability.
Decisions and Analysis
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Decision Analysis (DA) is the discipline comprising the philosophy, theory, methodology, and professional practice necessary to address important decisions in a formal manner. Decision analysis includes many procedures, methods, and tools for identifying, clearly representing, and formally assessing the important aspects of a decision situation, for computing the recommended course of action by applying the maximum expected utility action axiom to a well-formed representation of the decision, and for translating the formal representation of a decision and its corresponding recommendation into insight for the decision-maker and other decision participants.
The term decision analysis was coined in 1964 by Ronald A. Howard, who since then, as a professor at Stanford University, has been instrumental in developing much of the practice and professional application of DA.
The Decision Analytic Methods are used to control environmental hazards.
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Organizing Businesses and Systems
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A software development process is a structure imposed on the development of a software product. Synonyms include software life cycle and software process. There are several models for such processes, each describing approaches to a variety of tasks or activities that take place during the process.
Recommended
Texts
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Management Information Systems, 4/e
Gerald V. Post, University of the Pacific
David L. Anderson, DePaul U/McGowan Center
ISBN: 0072947799
Copyright year: 2006
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