Journal of Database Management (2000) 11(1): 3-17.

Distributed Database Design for Mobile Geographical Applications

Manhoi Choy, The Hong Kong University of Science and Technology, HK
Mei-Po Kwan, The Ohio State University, USA
Hong Va Leong, The Hong Kong Polytechnic University, HK

Abstract:  Advanced Traveler Information Systems (ATIS) require efficient information retrieval and updating in a dynamic environment at different geographical scales. ATIS applications are useful in yielding a better utilization of the limited costly transportation arteries and providing value-added traveler information. Many ATIS applications are built on the functionalities provided by Geographical Information Systems (GIS), which often cannot meet extra requirements like real-time response. We investigate GIS-based systems in ATIS and propose a system architecture based on GIS and distributed database technology. Issues on data modeling, data representation, storage and retrieval, data aggregation, and parallel processing of queries are discussed. This paper introduces a distributed system architecture for ATIS based on recent technology. It presents new data models for information representation and proposes data shipping for efficient query processing and function shipping for reducing communication overhead. The paper also examines the use of a network of computers for solving complex problems more timely and privacy protection for sensitive data.

View Full Paper . Return to Kwan's Homepage