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With the wide application of spatial information grid, how to solve the data synchronization has become a current research focus in spatial information grid. Because of the confidentiality and specificity of spatial data, it needs each grid node can only have their own data. When one grid node wants to use the data in another one, it must obey the principle of using the data without owning the data...
Web service directory is an important component of SOA-oriented urban spatial information sharing platform. The current UDDI and UDDI-based UBR have been poorly used actually. One the one hand, the business services of urban spatial information sharing platform have some characteristics such as diversity, complexity and security, so the increase of Web services make the maintenance of UBR become very...
In order to break the bulwark and eliminate the information isolated island in UGIS, the architecture of SOA-oriented urban spatial information platform is proposed. The SOA-oriented urban spatial information management and service architecture is designed and the key technologies are discussed in detail. The architecture is based on service and adopts the convenient and widely used SOA. It contains...
In spatial information sharing platform, an important use of the metadata is data searching. Traditional information sharing platform mostly search data just in the central node, which is inefficient. This paper presents a method which improves the efficiency of searching by mobilizing all the nodes of information sharing platform. That is, updating metadata of all the nodes through the synchronizing...
Spatial information grid is established in the environment of distributed grid. With the capability of offering required services, it can immediately customize specific services and resolve the problem in sharing and cooperation of distributed massive heterogeneous spatial data. Based on spatial information grid, aim of resource and information sharing mechanism is aggregating computing resource,...
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