SOMP - Society of Mining Professors: Minventory - statistical information on EU raw mat...

SOMP - Society of Mining Professors: Minventory - statistical information on EU raw mat...: Minventory - statistical information on EU raw material and mineral deposits :

Estonian Land Board: Geoportal: Estonian National Topographic Database

Estonian Land Board: Geoportal: Estonian National Topographic Database:



Estonian National Topographic Database


Estonian National Topographic Database (ENTD) together with CIS forms a basis for the National Land Information System. Creation of ENTD was initiated for fulfilling ELB´s goal "To produce up-to-date and high quality spatial (topographic) data and to provide society with different maps and spatial data products".

The Estonian National Topographic Database (ENTD) was established to achieve the following objectives:
  1. to manage and organise the production of topographic spatial data and topographic products and maps (hereinafter products and maps) covering the whole territory of Estonia;
  2. to provide the society with up-to-date and high-quality data, data services and maps produced on the basis of these data;
  3. to provide state and local government databases with topographic spatial data for objects managed in respective databases;
  4. to implement the directives of the European Parliament and of the Council establishing an infrastructure for spatial information in the Community.
  Overview about Estonian National Topographic Database ( 366.11 KB, 11.12.2009 )
  Regulation on Establishment and Maintenance of Estonian National Topographic Database ( 177.47 KB, 11.12.2009 )

Complex and resource-demanding re-engineering and migration of existing digital topographic data to enterprise geodatabase (ESRI ArcSDE 9.2 + Oracle 10g) was concluded in spring 2007.

Implementation of new object-based data updating rules caused need to write new specification for topographic data production (mapping). Private mapping companies, who achieved contract with Estonian Land Board, trough public tendering, now performing topographic data updating, following the new specification.

Every topographical object in ENTD has unique ID and topographical objects were associated or will be associated with corresponding data in registers like Road Register, Environmental Register and State Register of Construction Works. During topographical data updating process the lifecycle of objects must be followed and unique ID-s retained, so that the associations with external registers remain during the data updating process. It also enables us to keep history of topographic data changes. 

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