Abstract：It is necessary to build decision support system(DSS) of the synthetic exploration methods in the engineering geology because choosing methods in this area is highly reliant on the experience of experts. The development and application of database(DB) in the process of developing RGDSS is emphatically introduced. Through the analysis of DSS and DB，the importance of DB for developing DSS is understood，so the decision support-oriented DB of engineering examples for the synthetic geological exploration methods is firstly developed. The practical studies and applications show that it is feasible to develop a decision support system using object-oriented database management system.
