In the past decade, more and more government data became available as open data. Started by European initiatives such as INSPIRE, GMES/Copernicus and the PSI directive and, to deal with cross - border environmental pollution and security motives which need high- quality and up- to - date geographical information, governments are willing to open their data, despite the prevailing business models and licensing issues. In addition, there is the economic motive that small and medium - sized enterprises can take advantage of free geodata as it offers chances for many new applications and innovations. Releasing the Key Register Topography (BRT) has led to a significant growth of use of the data as downloaded databases as well as reference map in many web portals. The preliminary results of the research on the effects of the open data of the BRT shows that the users are satisfied and new applications see the light.
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