Information And Decision Support System

Information and DSS

Information is data that is accurate and timely, specific and organized for a purpose, presented within a context that gives it meaning and relevance, and can lead to an increase in understanding and decrease in uncertainty.

Information is valuable because it can affect behavior, a decision, or an outcome. For example, if a manager is told his/her company's net profit decreased in the past month, he/she may use this information as a reason to cut financial spending for the next month.

Decision Support System It is an "informational application" (to distinguish it from an "operational application" that collects the data in the course of normal business operation).

DSS is an application of Hebert Simon model, as discussed, the model has three phases:

I) Intelligence

Ii) Design

Iii) Choice

Attributes:

DSS should be adaptable and flexible.

DSS should be interactive and provide ease of use.

Effectiveness balanced with efficiency (benefit must exceed cost).

Complete control by decision-makers.

Ease of development by (modification to suit needs and changing environment) end users.

Support modeling and analysis.

Data access.

Standalone, integration and Web-based

 

Web information system

Web- based information systems

Creating a World Wide Web - an information system that functions in the Internet environment and is often called in the Soviet literature of the World Wide Web or the Web is one of the major scientific and technological achievements

The applications that have emerged on Intranets and Extranets using WWW technologies, can be referred to as WWW-based information systems. However, a WWW-based information system should be famous from a standard WWW application or page; the nature and the type of information that is made available to the user is different.

Information is therefore presented to the user in a bi-directional manner in a WWW-based information system.

While this definition of a WWW-based information system is generalized, there are commonalties between such systems. They Accept extensions to the basic HTML, using Java, Java Script, or VB Script to provide additional functionality to the basic hypertext links. Dynamic creation of HTML pages are also common in WWW-based information systems, using a connection to a relational or object-oriented database to process user requests. This is becoming increasingly more important in the development of electronic commerce environments, such as on-line shopping, where there is a need to process user requests

While also keeping the information on the WWW page up to date.