| 摘要 |
In a method of producing a data replica, data processing requests are issued from application programs running in application servers. Data processing corresponding to each of the data processing requests is executed in each of database servers, and a result of the data processing is replied as a response to one of the application programs which has issued the data processing request. The supply of the data processing requests to the database servers is controlled to keep the process order of the requests between the database servers.
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