The use of modern information technologies is dependent on the quantity and quality of available data which are important for derivation the parameters controlling the various spatial processes. It is known that it is the quality of available data used to derive the parameters of models, which is often the limiting factor of this model accuracy and hence its applicability in the several branches of the landscape research. Based on the previous written, the aim of the work is analysis of techniques used to derive consistent spatial database using geographic information systems. Construction of spatial database, described in this paper was based on system approach to the landscape, and it implied that the regular vertical relations must be respected so that generated units would be internally consistent. Landscape-ecological complex were generated by using a sequential map overlay (relevant analytical base), but also using lead factor method. That means to prefer the landscape element, which spatial differentiation is high, fairly observed and reliable acquired, also there exists considerable correlation between such element of spatial differentia­tion and other considerate elements of spatial differentiation. The conditions noted above satisfy georelief at best, that is represented by morphographical-morphometric types of georelief. This method provide spatial and contentual incontrovertibility of formerly inconsistent input data layers and their harmonization with the topographic base and enable to précising expression of spatial distribution of various geosystem elements.