A complete free solution for cadastral map management
Ivan, Gyula et al.
Since the mid of the 900s the Unified Hungarian Land Registry has been operating in standardized environment. The cadastral database standard (MSZ 7772-1) and the standard-based regulations on surveying and the database have been elaborated by the Institute of Geodesy, Cartography and Remote Sensing (FFMI). This solution is very similar to the Core Cadastral Domain Model (CCDM) produced by our Dutch colleagues. The Unified Hungarian Land Registry is a title registry, where the Hungarian State provides the authenticity of both data (map and land registry)[1,2,4,6-12,13]. Based on the experiences of the utilization of the standard (10% of the territory of Hungary covered by standardized database, approx. 800 000 hectares), FFMI has developed a software (DATR) for the integrated cadastral map and land registry data management. [3] The base idea of the development was to build-up a software, which provides a flexible, authentic and integrated management of cadastral map data and land registry. DATR is not a real GIS system, this software solution is able to manage any map data with the related land registry data. Cadastral map and land registry data are stored in the same database with the enforced integrity of them. Change management are only available via database transactions, therefore DATR has no map editing capacity. By this method we can enforce the authenticity of the two types of data (map and land registry). DATR is using an object-oriented database scheme, therefore the monitoring and management of business procedure is very flexible. DATR is using open APIs, therefore customization of the system, the business rules and procedures is very easy and flexible. DATR has certified its productivity in real life, since it is the graphic engine of Internet-based Hungarian Land Registry data service (TAKARNET). DATR has been developed by IT, cadastral and land registry professionals, therefore the continuous development and maintenance of the system is provided by FFMI. DATR system is a full FFMI development, all the source codes are owned and maintained by the Institute.
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