基于OGSA-DAI的异构数据集成系统的设计与实现

In modern society of information explosion, the data in different forms are stored in different places. How to manage and access to these distributed heterogeneous data sources has become a big problem. This paper compares existing technologies of data integration at first, and focus on researching the OGSA-DAI which is a combination data integration technology of grid and middleware. Then a heterogeneous data integration system based on OGSA-DAI is been designed and proposed. Users do not have to understand the storage details of data sources, but use a unified query interface to transparent access to needed data by this system. Finally, use three hetergeneous medicinal data sources stored in different places as test data to prove the feasibility of this system.