[postgis-users] MRDB with postgis (setting up)

[Hampe, Mark]

hi bart,

as you described, we used generalisation methods to construct generalised representations of the source data (cadastral building data). with the help of these java-classes (building simplification, aggregation, typification, displacement) we acieved the new representation and the links between them and stored both in the postgis/postgresql. other methods used matching algorithms to link existing representations. both functionalities were not intergrated in the PostGIS(yet).
we store the resulting representations as seperate tables and the links as attributes to the objects. 
the research work related to MRDB is still active. actually we are testing alternative possibilities for storing the links between corresponding objects. we are working on mrdb-metainformation and access methods for mrdb. furthermore functions for updating the mrdb should be integrated in the postgis.

i can give you more details if you are interest in. furthermore we would be interested in your work on mrdb.

regards,
mark






-------- Original Message --------
Subject: [postgis-users] PostGIS and the MRDB concept
Date: Wed, 2 Mar 2005 15:34:20 +0100 (CET)
From: bartvde at xs4all.nl
Reply-To: PostGIS Users Discussion <postgis-users at postgis.refractions.net>
To: postgis-users at postgis.refractions.net

Hi list,

I saw some articles e.g. from the GiMoDig EU project
(http://gimodig.fgi.fi/) about using PostGIS as a Multiple Representation
Database (MRDB).

An example of an article is:
http://www.ikg.uni-hannover.de/publikationen/publikationen/2003/ICA_2003_hampe_anders.pdf

They used some algorithms for data generalisation, did any of this end up
in PostGIS or are there plans for this?

Does anybody on this list have experience with using PostGIS as an MRDB?
How would one go about doing this?

Best regards,
Bart

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