USER INTERFACE AND INTERNET APPROACH - IMPORTANT
COMPONENTS IN THE SWEDISH CADASTRAL SYSTEM
Bo LAURI, Sweden
Key words:
INTRODUCTION
The task of the National Land Survey of Sweden (NLS) is to
contribute to an efficient and sustainable use of Sweden´s real
estate, land and water.
We also have the task to develop the service to exploit the
potential of existing and new public and commercial markets by meeting
the needs of our customers concerning geographic information and land
information.
The establishing and managing of the Swedish Integrated Cadastral
System in Sweden has been a major task for NLS for about 30 years. The
system has been in operation for about 25 years and is subject to
continuous development.
The establishing of the Swedish system was a project that involved
several ministries and agencies on central, regional and local levels.
Information from the Real Property Register (the Physical cadaster),
Land Register (the Fiscal Cadastral) are integrated within the system.
The Digital Cadastral Index Map is now also included to the system.
The major parts and an overview of the system is presented below:
The system provides all responsible agencies with integrated land
information i.e. improves efficiency of public bodies. With support
from the system the registration of title and mortgage is done the
same day as the application arrives.
The system also provides integrated information for multi-purpose
use in the whole Swedish society. The information is disseminated
on-line, direct to the users by NLS or as value added services by
information agents.
Integrated information together with the national cadaster index
map is accessible via Internet and available for more than 4 million
citizens.
The Real Property Register
The real property register is the basic register on real property.
It forms the basis for a number of important activities in society
such as land registration, real property credit, property taxation,
agricultural statistics, land surveying, population registration and
urban and regional planning.
The register is maintained by a number of cadastral offices
throughout the country. Maintenance of the register is basically a
task for national government authorities but there are also 39
municipal authorities (the biggest cities), which have responsibility
for maintenance within their own jurisdiction.
The Land Register
The main purpose of land registration is to give publicity and
legal protection for acquisition of rights in real property. An
orderly, well-functioning land registration system is a prerequisite
for guaranteeing security and facilitating economic transactions. Land
Register Authorities maintain the Land Register.
NATIONAL CADASTRAL INDEX MAP
All land in Sweden is divided into real property units. There are
approximately 3.2 millions such units in the country.
The Cadastral Index Map is a part of the Real Property Register and
gives the geographical representation of the property. The
responsibility for building and maintaining the digital map is on
shared responsibility bases between the national government
authorities and 39 municipal authorities (out of totally 290
municipalities).
There are differences between the cadastral register and the index
map in Sweden. The register has a certain standard for the information
and it is compulsory for both the national government authorities and
the 39 municipal authorities to update the real property register. For
the cadastral index map there is up to now no unified standard for the
whole country and it is not compulsory for these certain
municipalities to update a national cadastral index map database.
Last year an agreement between National Land Survey and these 39
municipalities however was made concerning deeper co-operation. The
main goal out of the agreement is to build a National Cadastral Index
Map (NDRK) covering the whole country.
NDRK shall:
- be the base for all geographic databases, which present property
information
- be available for organisations and the public via Internet or
via certain data format
- be stored in a system run by NLS
- be updated by the source of information
- handle objects with unique identifiers, which are joint with the
Real Property Register
- receive and disseminate changes via an User Interface
- be completed before the end of year 2003
USER INTERFACE 2000
The User Interface 2000 (UI 2000) is developed in a project and
composed as a concept for interchange of geographical information
between first of all the National Land Survey and the Municipalities.
The UI 2000 consists of information models, descriptions of
transferring mechanism and how they will be administrated and
maintained. The interface is not a format or software but a series of
technical principles, which can be used for different formats and
different data systems.
One important demand for the interface is that it will be able to
handle all the information in the cadastral index map in Sweden. The
content in the Cadastral Index Map, which is regulated in the Register
Law, is properties, plans, regulations, easements and ancient
monuments.
The interface will in the future be implemented for other kind of
geographic information, for example buildings and addresses.
UI 2000 gives the new perspectives. It is the objects, for example
the plan, easement or the property, which is the base instead of the
geometry. These perspectives facilitate integration of the map and the
property register.
Models of information
The core in UI 2000 are the models of information i.e. a formal
description of the data which will be included in the exchange. Nine
models are processed:
The models are expected to be stable for a long period of time
whereas technique and format will change. The models have links to the
Land Data Bank System via joint identifiers. The models can handle
either whole databases or changes of separate objects. This assumes
identifiers, which are unique for the country.
The modelling language Express, which has been used is a part of
the standard STEP (ISO 10303).
Format and applications for data transmission
UI 2000 consists besides models of information, of specified file
format and an application for data transmission. These three parts are
independent of each other and are possible to change and further
develop separately.
Technical solution
The specification for UI 2000 does nor describe how it shall be
connected to sending or receiving system or how the agreed model shall
be translated to different internal models which exists. There is a
demand for a unique solution for each system, which has to be taken
out by each organisation together with their system supplier. But
there are some basic criteria for each system, which has to be
fulfilled. The systems have to be object oriented, be able to make
controls of data structure and also handle changes of objects.
Implementation
The implementation of the UI 2000 now takes place in a pilot
project, where one municipality together with NLS are building a test
environment for a general evaluation of the interface. This phase of
the project will be completed during autumn this year. The UI will
thereafter be implemented for all municipalities
INTERNET
NLS has launched new Internet service View and buy maps and
detailed aerial photos of all of Sweden. It is an e-commerce site
where visitors can view and buy aerial photos and maps and search for
individual properties
Viewing is free of charge
Aerial photos covering the whole of Sweden can be viewed free of
charge on the web site. You only pay if you wish to order a photo. The
photos taken over Stockholm, Gothenburg and Malmö are so detailed
that you can see people in them. In the aerial photos of the rest of
Sweden, you can distinguish cars. But the site contains a lot more
than aerial photos.
A map shop, is also included in the new site and will gradually be
expanded to include more products. Since January, NLS has offered a
well-stocked shop with maps, atlases and nautical charts.
Services for estate agents and banks
www.lantmateriet.se also
provides two services especially designed for estate agents and banks,
etc. These services are called 'FastighetsSök' [property search] and
'KartSök' [map search], and enable users to obtain information on the
owners, tax value, addresses, etc. of a particular property by giving
an address or clicking on a map. To use these services, you first need
to sign an agreement with the National Land Survey of Sweden. The
e-commerce site is in Swedish only.
CONTACT
Bo Lauri
Deputy Head of Real Property Register Division
National Land Survey of Sweden
S-80 182 Gävle
SWEDEN
Tel. + 46 26 633 538
Fax + 46 26 611 888
E-mail: bo.lauri@lm.se
12 April 2001
This page is maintained by the
FIG Office. Last revised on 05-11-25.
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