Estonian topography database - buildings

The buildings of the Estonian Topographic Database (ETAK) spatial data set form the real-world phenomena of the group of ETAK's reality model "Buildings", which have been classified into phenomena classes: buildings, high-rise structures, other structures, underground buildings, fencing. Feature class buildings attributes are: type of building, address of the building. Characteristics of High-Range Facilities of the Feature Class are: type of high-rise facility, height of the high-rise facility, aid to navigation, relation of the high-rise facility to the building, building ETAK_ID. Other facilities of the phenomenon class attributes are: type of other facility, aid to navigation. The feature class of underground buildings attribute is: type of underground building. Characteristics of the conspicuity class boundaries are: type of fencing, woody plants on the fencing. The basis for the establishment and maintenance of the Estonian topographic database is the "Statutes of the Estonian topographic database" and the "Procedure for the acquisition of topographic data and topographic features of general significance". The main data sources are: data obtained by aerial imaging and laser scanning or their derivatives, including orthophotos; data transmitted by holders of information in the course of data exchange; data on the surveys carried out by the controller; data from other surveys and surveys, including public databases and other sources.