Analysis of possibilities for linking land registers and other official registers in the Republic of Croatia based on LADM

Abstract

a b s t r a c tWeak or non-existing linkage of official registers in the Republic of Croatia and the data redundancy as an inevitable outcome of such a state are the causes of various unwanted consequences for the relevant public authorities, as well as for citizens and companies as the end-users of that data.In this paper we present the results of an analysis of the status of the redundancy within the Croatian land administration-related registers. Following the analysis, suggestions are given on how the effectiveness of the analyzed registers can be increased by introducing a linking based on the Land Administration Domain Model (LADM). The proposed linkages were created by extending the Unified Modelling Language (UML) object classes of the LADM. The compliance analysis between registers and the LADM was conducted by using schema matching. Schema matching is a set of techniques used for comparing schemas (usually referred to as data models), and is well known within the database research domain. The results of the analysis were used to determine in which direction to go with extending of the LADM.All of the outputs of this research can be used to create a strategy for improving the effectiveness of the overall system of registers, which in turn should result in an overall economic progress of the country.

Overview of the Croatian Land Administration System and the Possibilities for Its Upgrade to 3D by Existing Data

“…An additional incentive for such a transformation was the foreseeable need for interoperability between the national system of registers and the European Union (EU) registers, and potentially in the future with other registers worldwide. The current system of registers in the Republic of Croatia is significantly vertically structured [4].…”

“…Recently conducted research in Reference [4] included the analysis of land-related registers in the Republic of Croatia with the purpose of assessing the overall condition of land-related data. These registers primarily included data on land features such as cadastral parcels, buildings, and utilities (which can be found as the source of 3D data), as well as the interests (rights, restrictions, responsibilities) established over those features and spaces.…”

“…One of the aims of the abovementioned research in Reference [4] was to determine the level of redundancy between the registers closely related to the domain of land administration. For that purpose, the Land Administration Domain Model ISO 19152 (LADM) was used as it represents the basis of all land administration systems worldwide, including both the legal and the spatial components of land administration.…”

“…However, situations like this should not occur as the public authority responsible for more than one register has unrestricted access to all of the data, is fully familiar with the underlying data models, and should therefore be able to find simpler solutions for data sharing than when data is kept in different jurisdictions. Recently conducted research in Reference [4] included the analysis of land-related registers in the Republic of Croatia with the purpose of assessing the overall condition of land-related data. These registers primarily included data on land features such as cadastral parcels, buildings, and utilities (which can be found as the source of 3D data), as well as the interests (rights, restrictions, responsibilities) established over those features and spaces.…”

Model driven architecture engineered land administration in conformance with international standards – illustrated with the Hellenic Cadastre

“…In the official publication of LADM, eight country profiles are included (see [10]). Apart from these, the past years more country profiles have been presented: Malaysia's [12], Poland's [13], Croatia's [14], Cyprus' [15] and that of the Republic of Cape Verde [16]. Some of them have proceeded to the physical database design using MDA [17], while others examine the implementation of a LADM-compliant 3D Cadastre ( [12,18,19]); all of them however, have the common scope of improving their country's land registers and to achieve interoperability.…”