Abstract
The city traffic information system is usually operated by independent IT company with the trusteeship form. most of information systems use the relation database to organize and store data. As a result, this accumulates mass history data. They are the independent database systems, federated or distributed database system. So in the information Grid, it is necessary to study the technique of organization and access the data, referring the Grid service standard of OGSA, using the data service interface based on the developing and running platform of GlobusToolkit’s 3, building virtual database service to achieve data access , information service, and use the high performance computing devices of the Grid to process the data in large scale.
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