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Here we will discuss about Information System. Speaking of Infomation system, we must know what it means, so whether that system?
"The system is a collection of independent components integrate with each other for a specific purpose."
If likened to a computer, CPU, monitor, mouse, and keyboard plugged into one and in turn to be able to use it. Then what is meant by Information that?
"Information is a tool to be known and used as food for thought and necessary in every condition, and is used for the consideration of the decisions to be taken."
Just as when going to college. Before we lecture, we must find and choose the best university, because the university is better then the better the level of education that will be obtained. As well as information in a company, the most important thing that underpin its development, information is something that is very important in an entity.
The role of information is a determinant of future decision making, as the information obtained inadequate company will have difficulty in controlling the resources so that in making a decision would not be less competitive than most competitors.
"System Information (SI) is a combination of information technology and the activities of people who use that technology to support operations and management."
Information systems (IS) is a system whose activities are devoted to the work of processing (capturing, transmitting, storing, retrieving, manipulating and displaying) information.
Thus, information systems dealing with data systems on the one hand and activity systems on the other. The information system is a form of communication system in which data is represented and processed as a form of social memory. Information systems can also be considered as a semi-formal language which supports human decision-making and action.
Information systems (IS) is a system within an organization that brings the daily transaction processing needs, support operations, are managerial and strategic activities of the organization and provide outsiders with a certain required reports.
What are the Components of Information Systems?
Here are the 4 components of the Information System, namely:
1. Management Information Systems
2. Decision Support Systems
3. Executive Information Systems
4. Transaction Processing Systems
"Management information systems are part of the planning system of internal controls of a business covering the use of people, documents, technologies, and procedures by management accounting to solve business problems such as the cost of the product, service, or a business strategy."
"Management information systems are distinguished by unusual because the SIM information system used to analyze other information systems applied in operational activities of the organization."
Transaction Processing System (TPS) is a computerized information system developed to process data in large quantities for routine business transactions such as payroll and inventory.
TPS erase boredom while doing the transactions while reducing the time, even though people still need to enter data into the computer system manually.
Transaction processing systems produce a variety of information products for internal and external use. For example, polling consumers make statements, payroll checks, sales receipts, purchase orders, tax forms, and financial accounts. TPS also update the database used by the company for further processing by the SIM.
>>Decision Support System (DSS)
DSS is one of the software products developed specifically to assist management in the decision making process.
As the name implies, is the purpose of this system is a "second opinion" or "information source" that can be used as a consideration before a manager decides a particular policy. The approach most often done in the process of designing a DSS is to use interactive simulation technique, so that in addition to attracting managers to use, this system is expected to represent the real-world circumstances or actual business.
It needs to be emphasized here is that the presence of DSS is not to replace the task manager, but to be the supporting infrastructure (tools) for them. DSS is actually the implementation of decision-making theories that have been introduced by the sciences such as operations research and management science. Only difference is that if the first to find a solution to the problems facing the iteration calculation must be done manually (usually to find the minimum, maximum, or optimum), the current PC has offered the ability to solve the same problem in a relatively short time.
In both of the above disciplines, the technical term decision modeling, decision theory and decision analysis which is essentially represent management problems and faced every day in the form of quantitative. The classic examples of problems in this field is a linear programming, game's theory, transportation problems, inventory systems, decision tree, and so forth. Of the many classical problems that are often encountered in business activities daily, some can be easily simulated and solved by using a formula or simple formulas. But there are many existing case so complicated that needs computer sophistication.
Decision Support System (DSS) is a natural progression of the system of information reporting and transaction processing systems. DSS are interactive, computer-based information system that uses decision models and specifically use the database to help the decision making process for managers and end users of information generated in the form of periodic and special reports and output of mathematical models and expert systems.
>>EXECUTIVE INFORMATION SYSTEM (EIS)
Executive Information System (EIS) is a computer-based system that helps executive managing data and information to Determine the issues, researching solutions to be provided, and demonstrate the process of strategic planning.
The 5 data takes the EIS:
1. Integrated Data from various databases, student, finance, personnel to analyze from different angles.
2. Sometimes, the executive takes the the data from the database on-line (ex. Currency Exchange).
3. Complete Data were summarized overall data.
4. External data (general information).
5. Record data.
>>EIS in the ESS (Executive Support System)
EIS is the core of the Executive Support System (ESS). ESS can be divided into 3 main sections, namely:
-Mental Modelling > EIS design process, to identify the critical factors succes, data, information, and so on.
-EIS > People or technologies that provide data to executives and change the information.
-Office Automation Support > kind of executive communication tools to interact with staff in decision making.
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