The Multi Criteria Decision Making (MCDM) delivers strong decision making in areas where
selection of best alternative is highly complex. This paper reviews and explain the main condensations
of MCDM models and practices in detail. The purpose is explained and identify various application
and the approaches and to suggests different MCDM models for different decision makling issues and
how to select the best alternatives. This paper also examines the DEMATEL model and problems in
DEMATEL for decision making and how DEMATEL have been improved to overcome the problems.
The MCDM methods have helped to choose the best alternatives where that they are many criteria are
present, the best can be selected and analyzed the different scope for the criteria, weights for the criteria
and the choose the ideal ones using any multi criteria decision making methods.