Summary:

At present, while developing Integrated Real Estate Information System, as well as in the light of the need to implement the INSPIRE directive and the need of interoperability and harmonization of spatial data, it is extremely important in Poland to keep up-to-data cadastral data which maintains in accordance with the conceptual cadastral data model specification. Particular cadastral data are those on land use and classification contours, including class-land use (intersection of the land use and classification contour within the limits of the parcel of land).
The paper aims to analyze the inconsistencies between the symbols of class-land use (attribute OKU in the cadastral database) and the conceptual cadastral data model specification. The research was carried out on the basis of cadastral databases for selected rural test objects in the EWMAPA software. The most frequent types of inconsistencies were indicated based on the research. The results of the study were confronted with the existing legal provisions, in order to indicate factors affecting the existence of the analyzed discrepancies in the cadastral database. Changes in legal regulations allowing to eliminate the most common inconsistencies were proposed.