Dss can resolve unstructure questions and self - structure questions by supplying background materials , making sure of questions and models , and comparing potential resolution ways . it will be very useful to integrate gis and dss to analyze water resource . the author wants to integrate gis and dss in the developing and designing of liaoning province ' s surface water geography information system Dss以信息技術(shù)為手段,應(yīng)用決策科學(xué)及有關(guān)學(xué)科的理論和方法針對(duì)某一類(lèi)型的半結(jié)構(gòu)化和非結(jié)構(gòu)化的決策問(wèn)題,通過(guò)提供背景材料、協(xié)助明確問(wèn)題、修改完善模型、列舉可能方案、進(jìn)行分析比較等方式,為管理者做出正確決策提供幫助的人機(jī)交互的信息系統(tǒng)。