decision support system models
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DECISION SUPPORT SYSTEMODELS.
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DECISION SUPPORT SYSTEM MODELS
1- Behavioural Model.
2- Management Science Model.
3- Operations research Model.
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BEHAVIOURAL MODEL
Focuses on studying and understanding the different
behaviour/trends amongst the variables.
A behavioural model is built by observing the previous b
of an entity or a system; the resulting model can then be
predict future behaviour and performance.
Examples of such a model can be trend analysis, co-rela
regression etc.
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MANAGEMENT SCIENCE MODEL
Based upon the principles of the management, the management a
and the econometrics.
Examples of such a model can include budgetary systems, cost ac
capital budgeting, inventory management etc.
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OPERATIONS RESEARCH MODEL
Based on the different mathematical formulae.
Represent the real life problems depending on the various variab
the parameters expressed in the algebraic equations form.
Examples of such a model can be linear programming, ABC analy
mathematical programming techniques, material requirement pl
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DEVELOPMENT OF DSS
The decision support system is determined by the type of infoand the facilities required for taking decisions .
Decision support systems are developed using programming
languages or produced by packagesspecially incorporating de
support development tools.
Fourth generation level language are appropriate for creating
developing DSS , that is because they are database oriented an
decision making process need data retrieval and analysis.
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SELECTION OF LANGUAGE
Availability of language and support for it .
Experience of developers with various languages.
Amount of manipulation v/s presentation of data.
Need to document and maintain the program .
Frequency of use and number of users
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ADVANTAGES OF USING PROGRAMMINGLANGUAGES
Application development is speedy
Many are end-user orientated
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METHODS OF DEVELOPING DSS
DSS generator
DSS shells
Customer made software
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DSS GENERATOR
Is comprised of programs such as data management tools, elespreadsheets, report generators, statistical packages, Graphica
packages, query languages that help in the development of DS
DSS generators, FOCUS, Excel and Lotus 1-2-3.
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DSS SHELLS
Shells eliminate the need for developing the DBMS, model ma
systemAnd user interface , because skeletal versions of these modules
available in the shell.
Shells have become user friendly, allowing even users with litt
programming background .
The main advantage of shells is that it may have to be customi
meet the needs of the decision make or the user may have to a
problem to the tool.
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CUSTOM MADE SOFTWARE
This is designed and developed by organization.
The software is developed using a procedural language , such as
generation language such as FOCUS.
Organizations may also choose to combine shells and customised