Abstract: Decision support systems (DSS) provide decision-makers with an interactive environment for analyses of information with various models to help solve unstructured and NP-hard problems. The important aspect of DSS is a technical and technological approach to the design and implementation of the above systems. A traditional approach to DSS engineering and implementation requires a great deal of effort for its maintenance. However, the enterprises would like to concentrate on its core competitiveness instead of non-core activities like IT maintenance. As a result of this, IT outsourcing has became a very popular event. Thus there is a growing need for intelligent decision support tools capable of assisting a decision maker in many problems in SMEs (Small and Medium Sized Enterprises). In this paper we present the use of declarative programming (constraint logic programming and relational SQL database) as an environment and framework for such decision support systems in an application service providing (ASP) model.
B I B L I O G R A F I A1. LIAO S.Y., WANG H.Q., LIAO L.J.: An extended formalism to constraint logic programming for decision analysis, Knowledge-based Systems 15, 2002 , pp 189-202.
2. PEABODY G.: Interpath connects Customer to SAP Applications via World-class Communications, Data Center and Support Infrastructure Aberdeen Group 2000.
3. LACITY M.C., HIRSCHHEIM L, WILLCOCKS: Realizing outsourcing expectations, Information Systems Management 11(4), 1994, pp 7-18.
4. BISDORFF R., LAURENT S. “Industrial linear optimization problem solved by constraint logic programming”, European Journal of Operational Research 84 (1), 1995, pp 82-95.
5. LAMMA E., MELLO P., MILANO M. “A distributed constrained-based scheduler”, Artificial Intelligence in Engineering 11,1997, pp 91-105.
6. LEE H.G., LEE G. Yu., “Constraint logic programming for qualitative and quantitative constraint satisfaction problems”, Decision Support Systems 16 (1), 1996, pp 67-83.
7. RYU U. Young .”Constraint logic programming framework for integrated decision supports” Decision Support Systems 22, 1998, pp 155-170.
8. BENNETT Ch. TIMBRELL G.: Application Services Providers: Will They Succeed ?, Information Systems Frontiers, pp 195 – 211, Kluwer Academic Publishers, 2000.
9. http://www.cs.kuleuven.ac.be/
10. “XML Schema part 0”, W3C Working Draft, 2000 (www.w3.org/TR/xmlschema-0) 
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