N. Bakker

Cadastre, Strategy & Policy, Apeldoorn, Netherlands


The Dutch Cadastre has worked several years on the development of an object-oriented topographical database at the scale 1:10,000, called TOP10NL. The underlying data model is based on the general Dutch standard for data models: Basic Model for Geo-Information (NEN3610, 2005). This general model is based on the international standards of ISO and OGC. Other geo-information sectors are also recommended to use the general model, so the data can be exchanged between the different applications. The sectors of physical planning,  water management, cultural heritage and archaeology already adopted this general model. The chosen exchange format  is GML.

In the public administration area in the Netherlands the idea has developed to create Basic Registers. Basic registers are those administrations which are essential for the public sector. After several years of preparation the Dutch government has defined 6 basic registers which will be established the coming years. The registers are both from the geo-information field as the non- geo-information field.  The first 6 registers are: Register of Persons, Cadastral Registers, Register of Companies, Register of Addresses, Register of Buildings and Base map 1:10.000 (Topography)  . Later other registers will follow. The most appropriate public agency for the type of data in question will be responsible for the administration. The Dutch Cadastre is responsible for the registers cadastral parcels and topography. The municipalities will be responsible for the registers of  natural persons, addresses and buildings. The Chambers of Commerce are responsible for the register of companies.

TOP10NL is foreseen as the Basic Register Topography and acts as a base for the National Spatial Data Infrastructure.  With the introduction of TOP10NL a large number of technical and substantive renewals are realised in the field of topographical data. It is one of the first object-oriented topographical databases in Europe .

The new status of TOP10NL as basic register charges this with special requirements. The use of the data will be mandatory throughout the entire government sector, as there are several ministries, provinces, municipalities and water boards. Also the users have obligations. They have to report back when they find errors in the dataset.

This paper reports about the realisation of the TOP10NL database, the principles of the basic registers and the consequences for the organisation of updating and delivery of the data to the users.