summaries
J. Berends - The RAVIproposal for a national 1:10,000 root
database
The Netherlands Council for Land Information (RAVI) was
established in 1984. Its goal is to contribute to the realization
of an efficient and effective Organization of land information
and geographic information. The RAVI advises the Minister
of Housing, Physical Planning and Environmental Affairs
(VROM).
Given the enormous social significance of land and real estate
in the Netherlands, the Minister of VROM, as part of its
coordinating work, has asked the RAVI to draft a master plan
for the Provision of information on land and real estate. The
plan is specifically intended to deal with intergovernmental
data transfer.
In the Netherland it has been recognised that there is a great
needfor a country-wide digital geographica! data set at the
scale 1:10,000.
The database will be called the digital root database and is
comparable to the Topographie Service's analogue map scale
1:10,000. By introducing the root database a strueture is
created which can considerably improve the transfer of data
and the accumulation of information for policy making pur-
poses. By mutual use of underlying data, multiple data gather-
ing and inconsistency can be avoided.
The proposed digital root database 1:10,000 will serve as a
uniform foundation for the analysis and graphic presentation
of all kinds of thematic information.
P. W. Geudeke - From basic database to root database. The
Topographie Service as producer of a 1:10,000 root database
In 1952, on the basis of an extensive user survey, the Managing
Director of the Topographie Service of the Netherlands re-
quested permission for the produetion of a map series at scale
1:10,000. The Minister of Defence, ir. C. Staf, with an agri-
cultural background and deeply convinced of the public inter-
est of such a series, granted the permission. Up to the present
day this map series is used intensively for purposes of planning
and management by national and other public authorities.
At the Topographie Service the first steps towards computer-
assisted map produetion were taken in the Seventies.
Gradually it became apparent that the technological develop-
ments opened up other perspectives. Thinking in terms of
'maps' made way for thinking in terms of 'databases'.
In 1990 the Service published an objective for the Nineties:
building up a triad of digital databases, the contents of which
correspond with the map series 1:10,000; 1:50,000 and
1:250,000. The actual building of the 1:10,000 basic database
started by the end of 1991. Within the framework of the map-
ping Programme that has been laid down by the Ministry of
Defence, the completion may be expected around 1997/1998.
The need for a digital root database at scale 1:10,000 has been
shown clearly in the planning outlines for the supply of land
information (Structuurschets Vastgoedinformatievoorzien-
ing). From this report and from contacts with users it appears
that the 1:10,000 basic database of the Topographie Service is
a good starting point to meet the need for such a root data
base.
The Topographie Service is wil/ing to attune the specifications
of the root database and the basic database to each other and
will play to that end - when asked an active role in the core
commission.
Other questions of (potential) users are related to the speed of
produetion and to updating. Wherever demands are made that
exceed the ongoing mapping Programme, speeding up the
produetion may be realized by means of co-financing by users.
Another possibility is setting up joint projects in which a
basic/root database is derived from available large scale ma-
terials of municipalities.
Finally, the problems with respect to reimbursements for use
and aspects of Copyright need to be solved as weil.
B. Coelman - Spatial Information System Enschede (RISE).
Guide-lines for the selection of Software for an integral land
information System
The municipality of Enschede started with setting up an in
tegral municipdl land information System in 1985. In 1986 this
led to the preparation of a definition study, in which the
starting points strueturelimitations, definitions, identifica-
tions, etc.) were laid down. In subsequent years different data
bases were built up on the basis of stringently defined require-
ments.
As from 1990 onwards, as a consequence of a change in the
information and automation policy of the municipality, in-
house System development was no longer permitted. That is
why a new definition study was produced, which contains the
starting points and requirements for the Software to be
procured. On the basis of these requirements a strict selection
procedure has been executed. Because of the uniform
approach from 1985 and a systematic selection procedure the
introduetion of the integral System passed off without Prob
lems.
This article provides a global insight into the formulated start
ing points, as well as into the selection method executed.
R.J. van Essen - Cart/o/GRAPHIXMap construction in a
digital era
A new Software package named Cart/o/GRAPHIX was
launched recently on the Dutch market and has caused quite
some discussion within the Dutch cartographic society. This
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