SG 1 Part 1

Intro to Information Systems

system

It is an interrelated set of components that function together to achieve an outcome.

terminal

It provides an interface to the user.

Goal setting

A principle that defines exactly what the system is supposed to do.

System boundary

It defines the components that make up the system.

system environment

It is anything outside the system boundary.

subsystems

Each of these carries out part of the system function or goal.They communicate by passing messages between themselves.

subsystems

They are important because they can help handle system complexity and thus improve the understanding of a system.

good system

It will be made up of highly independent subsystems with minimal flows between them. Minimizing flows in turn minimizes complexity and simplifies the system.

Feedback

It is the idea of monitoring the current system output and comparing it to the system goal.

Purpose

It is the reason it exists or the reference point for measuring its success.

Subsystems

It is a parts or elements which perform specified tasks that are compatible with the goals of the larger system of which these are parts.

Environment

It is the people, facilities, rules, policies, and regulations that surround a system.

Boundary

It is the perimeter or line of demarcation, between a system and the environment.

Connections

It transmit the flow of material and information that coordinate the system’s components.

Control Mechanisms

It is the rules and logic that govern the individual subsystems and the interactions among them.

Business system

It is a collection of policies, procedures, methods, people, machines, and other elements that interact and enable the organization to achieve its goals.

Information system

It is a collection of interrelated components that collect, process, store, and provide as output the information needed to complete a business task.

Work Practice

It is a methods and procedures used by people and technology to perform work.

Information

It can include formatted data, text, images and sounds.

People

It is the persons, who enter, process, and use data.

Information Technology

It includes hardware and software that perform one or more data processing tasks.

Transaction Processing Systems

It process large amount of data for routine business activities or transactions. These are very important for the organization since they gather all the input necessary for other types of information systems.

transaction

It is an event that generates or modifies data that is eventually stored in an information system.

Management Information Systems

It provide a standard reports for managers about transaction data.

Decision Support Systems

These are designed to help organizational decision makers identify and choose between options or decisions.

Office Automation Systems

It support general office work for handling and managing documents and facilitating communication.

Expert Systems

It is also called knowledge-based system, it perform a task that would otherwise be performed by a human expert. Some are designed to take the place of human expert, while others are designed to aid them.

Expert Systems

They are part of a general category of computer applications known as Artificial Intelligence (AI).

Executive Information Systems

It provide a generalized computing and communication environment to senior managers to support strategic decisions. These are designed to facilitate senior managers’ access to information quickly and effectively