Research on Opening Geospatial database connectivity

With the fast development of GIS technology, higher requirements have been increased for the spatial database connectivity and accessibility. This study proposes a comparative analysis on cross-sectorial large-scale shared connection to spatial database, thus to point out the hard-to-achieve synchronization updating during different data types conversion. Based on the analysis of interfaces of heterogeneous databases connectivity, the article proposes the `Opening Geospatial Database Connectivity (OGDC)´ interfaces mechanism and specifications, which provide a completely new model that a series of standard interfaces provided by several GIS platform software providers jointly to be realized by database providers or data providers. Finally, the feasibility and advantages of these proposed standards and specifications are demonstrated by a prototype using the OGDC from the distributed spatial database software `BeyonDB´. And the prototype shows that OGDC could perfectly take account of both the functionality, the efficiency and the usability, thus to provide a new application model for the standardized sharing and continual utilizing of the heterogeneous spatial database.