Research and design of multi-source spatial data integration platform based on metadata.

On the basis of metadata standard,a design scheme for the metadata base structure was proposed according to specific application requirements in this article,which was mapped to relational database and then was saved.On this basis,an integrated management system platform for multi-source spatial data was designed and realized.This platform offered the data service for the upper-layer application through the uniform data interface,conquered the difficulty of information system integration brought from the differences in isomeric multi-source data format,data storage location and data access strategy,and provided platform support for constructing the integrated system.