<XML><RECORDS><RECORD><REFERENCE_TYPE>3</REFERENCE_TYPE><REFNUM>9308</REFNUM><AUTHORS><AUTHOR>Gesbert,N.</AUTHOR></AUTHORS><YEAR>2004</YEAR><TITLE>Formalisation of Geographical Database Specifications</TITLE><PLACE_PUBLISHED>ADBIS'04, Eighth East-European Conference on Advances in Databases and Information Systems, Budapest</PLACE_PUBLISHED><PUBLISHER>N/A</PUBLISHER><ISBN>963-311-358-X</ISBN><LABEL>Gesbert:2004:9308</LABEL><KEYWORDS><KEYWORD>geographical databases</KEYWORD></KEYWORDS<ABSTRACT>The specifications of a topographical database, like those national mapping agencies produce, contain a lot of information about the data, which is needed to correctly and precisely interpret their meaning. This information, which is not present in the raw data model, is in particular crucial to data interoperability and geographical database integration. But the specifications are huge text-based documents which are ill-suited to automatic processing. In particular, it is quite difficult for the time being to do an accurate comparison of two specification sets. This article addresses this problem by defining a method to represent these specifications in a formal and unified way. The main idea of it consists in defining a model of real ground entities and linking it to the actual data model of the database. Specifications are seen, in object-oriented terms, as relationships between a class of real ground entities and one or several classes of database objects.</ABSTRACT><URL>http://www.sztaki.hu/conferences/ADBIS/16-Gesbert.pdf</URL></RECORD></RECORDS></XML>