Decision Support Systems Architectures

D De ec ci is si io on n S Su up pp po or rt t S Sy ys st te em ms s A Ar rc ch hi it te ec ct tu ur re es s C Cr ri is st ti in na a O Of fe el li ia a S St ta an nc ci iu u " " T Ti ib bi is sc cu us s " " U Un ni iv ve er rs si it ty y o of f T Ti im mi iş şo oa ar ra a, , R Ro om ma an ni ia a REZUMAT. Lucrarea prezintă principalele componente ale sistemelor de asistare a deciziei, apoi sunt descrise, analizate respectiv comparate trei tipuri de arhitecturi ale acestor sisteme: arhitectura în reţea, arhitectura centralizată şi arhitectura ierarhizată. According to Sprague and Carlson [Lu03], decision support systems would consist in the following components (Figure 1): data management component; model management component; user interface management component; decision support system architecture. Nowadays, the components of decision support systems are very much like the ones identified by Sprague in 1982 (Figure 1): user interface; knowledge based subsystems; data management module; model management module. The user interface is a component that provides the communication between the user and the decision support system. The proper design of this component is really important, as it is the only one the user actually deals with. The data management method is a subsystem of the computer-based decision support system, and has a number of subcomponents of its own (Figure 2.): the integrated decision support system database, which includes data extracted from internal and external sources, data which can be maintained in the database or can be accessed only when is useful; the database management system; the database can be relational or multidimensional;