Abstract:

Because of historical reasons and the development of database technology, many enterprises and institutions have accumulated and will accumulate a large variety of heterogeneous data. The heterogeneity is mainly manifested in database types and data structures. Aiming at this problem, we take the hydrological distributed heterogeneous database of the Three Gorges Reservoir water environment for example, and build the hydrologic and water environment data exchange architecture and data sharing platform based on the analysis of water environment and hydrological data requirements.The problem of data exchange between different databases has solved through heterogeneous multisource database engine middleware. As for the historical data exchange problem which is in a large number, we present a partially imported data exchange mode. The use of the data catalogue registration technique makes the management and use of the integration platform more convenient and general. The heterogeneous multi-source database engine can not only facilitate the connection of various current mainstream databases, but also solve the problem of connecting web data interfaces using web services techniques. Experimental results show that the proposal can meet the demand of heterogeneous data integration in different application environments.

Key words: heterogeneous data;data sharing;GDBE;data integration;middleware;integration system