| 摘要 |
A data management system having a plurality of data servers connected via a network is provided, wherein each data server includes: a data management section that manages a data item in correspondence to a local identifier of the data item and a global identifier of the data item; a request processor section that searches the data management section for a data item requested from a client, provides the requested data item to the client when the requested data item is found, and transmits a data inquiry containing a global identifier of the requested data item to other data server to detect a data server which stores the requested data item when the requested data item is not found; and a response section that searches, when receiving a data inquiry from another data server, the data management section for a data item corresponding to a global identifier contained in the data inquiry and transmits a result of the search to the another data server.
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