Study on structure and key technoligies for railway information sharing platform of sharing database

Based on the analysis of railway information sharing platform construction,it was pointed out that the establishment of a shared database was the core of the integration of existing information resources,and one of the key factors in the implementation of railway information.It was proposed a data source layer contains,shared database layer and the theme of the three-layer architecture of the shared database design.By studying the data federation mechanism,ETL data integration mechanisms and middleware-based data integration system,it was given the implementation of the sharing database.