Transference and Storage of Spatial Data in Distributed Wireless GIS

Abstract

There has been a great development in Wireless GIS (WGIS) new century. Spatial data transferring and storage in GIS are developed from wired to wireless network. This paper first briefly introduces the technologies and strategies of spatial data transferring and storing in distributed Wireless GIS. Secondly, the schemes of spatial data transferring modes in wireless GIS for improving the network transfer rates are introduced emphatically, and the distributed transferring process technology of GIS spatial data are also discussed. Based on these, we present the storage strategies in wireless database, and introduce mobile computing conception and three-tier wireless replication database. Here, we emphasize on dynamic replication strategies and methods in wireless environment. Finally, we compare several data storage strategies in WGIS databases and the dynamic multi-tier replication strategy is proposed for wireless database storage…