Decision support systems are a class of computer-based information systems including knowledge based systems that support decision making activities. A DSS can take many different forms. In general, we can say that a DSS is a computerized system for helping make decisions. A decision is a choice between alternatives based on estimates of the values of those alternatives.
The DSS Architecture has three main components.
The Database
The database contains information about internal data and external data that will contribute to the decision making process. This data is in most cases more extensive than traditional relational models. The database must consider the input data to the system and the outputs to the user. Even must have a differentiation between the levels of inputs and check the quality of the data.
The Model Base
This module contains a set of algorithms that makes decisions based on the information in the database. This information is then summarized and displayed as tables or graphs.
The Interface
This is what the user will use to interface with the system. This is complimented with an interactive help and navigation screen.
The Benefits of DSS are,
1. Improving Personal Efficiency
2. Expediting Problem Solving
3. Facilitating Interpersonal Communication
4. Promoting Learning or Training
5. Increasing Organizational Control
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