Definition Of Decision Support System (DSS)

A decision support system (DSS) is a computer program application that analyzes business data and presents it so that users can make business decisions more easily. It is an "informational application" (to distinguish it from an "operational application" that collects the data in the course of normal business operation).Typical information that a decision support application might gather and present would be:

Comparative sales figures between one week and the next
Projected revenue figures based on new product sales assumptions
The consequences of different decision alternatives, given past experience in a context that is described
A decision support system may present information graphically and may include an expert system or artificial intelligence (AI). It may be aimed at business executives or some other group of knowledge workers.

Source: http://searchcio.techtarget.com/definition/decision-support-system

Definition OF UML

UML (Unified Modeling Language) is a standard notation for the modeling of real-world objects as a first step in developing an object-oriented design methodology. Its notation is derived from and unifies the notations of three object-oriented design and analysis methodologies:
* Grady Booch's methodology for describing a set of objects and their relationships
* James Rumbaugh's Object-Modeling Technique (OMT)
* Ivar Jacobson's approach which includes a use case methodology

Source: http://cplus.about.com/od/glossar1/g/UML.htm
Maradel Wati