Transaction synchronization in multiresolation spatial databases
GIS '96 Proceedings of the 4th ACM international workshop on Advances in geographic information systems
An integrity constraints driven system for updating spatial databases
Proceedings of the 8th ACM international symposium on Advances in geographic information systems
Distributed Systems: Concepts and Design
Distributed Systems: Concepts and Design
A Uniform Framework for Integrating Knowledge in Heterogeneous Knowledge Systems
ICDE '95 Proceedings of the Eleventh International Conference on Data Engineering
Quality-driven geospatial data integration
Proceedings of the 15th annual ACM international symposium on Advances in geographic information systems
An inconsistency tolerant approach to querying spatial databases
Proceedings of the 16th ACM SIGSPATIAL international conference on Advances in geographic information systems
Selective data replication for distributed geographical data sets
Proceedings of the 16th ACM SIGSPATIAL international conference on Advances in geographic information systems
Geospatial editing over a federated cloud geodatabase for the state of NSW
Proceedings of the 18th SIGSPATIAL International Conference on Advances in Geographic Information Systems
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Federal, state and local government agencies develop, exchange and maintain geospatial information for the purpose of land-related legislation and administration. Geospatial information change continually and geospatial datasets become outdated and hence unsuitable for decision support because of inadequate quality of data, and are costly to maintain. There is a growing demand for accurate and consistent geospatial information in critical sectors such as emergency response. Examples of such geospatial information include the address locations, cadastre (land titles/lots), Environmental Planning Instruments (EPI), and roads and administrative boundaries. Often geospatial data are not synchronized within an agency or across agencies, leading to inaccurate data in repositories and infrequent updates (if at all). Vendor software, such as ArcGIS provides a basic replication solution. However such solutions are vendor environment dependant. Furthermore, real world spatial enterprises have many complexities that lead to replication interruption leaving replicated databases in spatially inconsistent states. In this paper we use a near real-time event driven asynchronous replication mechanism for selective heterogeneous geospatial data based on a mediation framework. Within this framework, we have introduced a failed-tuple blocking strategy that overcomes some of the limitations faced in the real-time operation of the framework. The proposed method was applied to synchronizing cadastral geospatial information across multiple repositories, including a repository that stores data spatio-temporally. The repositories are used in near real-time Internet and other mapping applications. The result of this application is briefly discussed.