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Types of Information Systems

Types of Information Systems

Types of Information Systems:

  1. Transaction Processing Systems

A transaction processing system provides a way to collect, process, store, display modify or cancel transactions. Most of these systems allow multiple transactions to take place simultaneously. The data that this system collects is usually stored in databases which can be used to produce reports such as billing, wages, inventory summaries, manufacturing schedules, or check registers.

  1. Management Information Systems

A management information system is an information system that uses the data collected by the transaction processing system and uses this data to create reports in a way that managers can use it to make routine business decisions in response to problems. Some of the reports that this information system creates are summary, exception and ad hoc reports. All this is done to increase the efficiency of managerial activity.

  1. Decision Support Systems

A decision support system helps make decisions by working and analyzing data that can generate statistical projections and data models. This system gives support rather than replacing a managers judgement while improving the quality of a managers decision. A DSS helps solve problems while using external data.

  1. Expert Systems and Neural Networks

An expert system, also known as a knowledge-based system, is a computer system that is designed to analyze data and produce recommendations, diagnosis and decisions that are controlled. A neutral system uses computers to foster the way a human brain may process information, learn and remember that information.

  1. Information Systems in Organizations

This information system collects, stores and processes data to give an organization real-time useful and accurate information. This information system encompasses data gathering information from the people and machines that collect, process, output and store data. Also in the networks that transmit and receive data and the procedures that govern the way data is handled.

L2: Cyber Security Tutorial In Hindi| Information System | Component of information system​

L2: Cyber Security Tutorial In Hindi| Information System | Component of information system​

Pyramid Diagram of Organizational levels and information requirements:  Understanding the various levels of an organization is essential to understand the information required by the users who operate at their respective levels.

Operational management level: The operational level is concerned with performing day to day business transactions of the organization. Users at this level use make structured decisions. This means that they have defined rules that guide them while making decisions. For example, if a store sells items on credit and they have a credit policy that has some set limit on the borrowing. All the salesperson needs to decide whether to give credit to a customer or not is based on the current credit information from the system.

Tactical Management Level: This organization level is dominated by middle-level managers, heads of departments, supervisors, etc. The users at this level usually oversee the activities of the users at the operational management level. Tactical users make semi-structured decisions. The decisions are partly based on set guidelines and judgmental calls.

Strategic Management Level: This is the most senior level in an organization. The users at this level make unstructured decisions. Senior level managers are concerned with the long-term planning of the organization. They use information from tactical managers and external data to guide them when making unstructured decisions.

What is Cyber Secirity, Neeeed of CS and History of CS.

What is Cyber Secirity, Neeeed of CS and History of CS.

Namaskar, 

In Today's lecture, I will cover the Introduction to Cyber Security of subjectCyber Security which is one of the Important subjects of professional courses.

Information systems: Information systems are the software and hardware systems that support data-intensive applications. Such a system may be as simple as a 3x5 card catalogue system on a desk, or a desktop calendar. Or, it may be as complicated as a multi-node computer database system used to manage vast quantities of related information.

The six components that must come together in order to produce an information system are:

  1. Hardware: The term hardware refers to machinery. This category includes the computer itself, which is often referred to as the central processing unit (CPU), and all of its support equipment. Among the support equipment’s are input and output devices, storage devices and communications devices.
  2. Software: The term software refers to computer programs and the manuals (if any) that support them. Computer programs are machine-readable instructions that direct the circuitry within the hardware parts of the system to function in ways that produce useful information from data. Programs are generally stored on some input/output medium, often a disk or tape.
  3. Data: Data are facts that are used by programs to produce useful information. Like programs, data are generally stored in machine-readable form on disk or tape until the computer needs them.
  4. Procedures: Procedures are the policies that govern the operation of a computer system. "Procedures are to people what software is to hardware" is a common analogy that is used to illustrate the role of procedures in a system.
  5. People: Every system needs people if it is to be useful. Often the most overlooked element of the system is the people, probably the component that most influence the success or failure of information systems. This includes "not only the users, but those who operate and service the computers, those who maintain the data, and those who support the network of computers."
  6. Feedback: it is another component of the IS, that defines that an IS may be provided with feedback (Although this component isn't necessary to function).
 
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