| 摘要 |
PURPOSE: A method for processing the data of a distributed database is provided to make GIS(Global Information System) users run a large-capacity database with many application programs in the distributed environment by managing the data identicalness between the space data servers. CONSTITUTION: A listen TCP(Transmission Control Protocol) port(10) receives a file written with the changed particulars of another server, and a receive TCP message(20) transmits the changed information to a post job message(30). The post job message accumulates upload jobs in a job message queue(40). A schedule job(80) periodically outputs a change job and accumulates the change job in the job message queue. An upload running file is run by an execute job message(70), and the changed particulars are reflected to a database. A get job message(50) takes out one job from the job message queue, and a dispatch job message(60) checks the job. The execute job message inspects the changed particulars and records the changed particulars in the database. The recorded changed particulars are transmitted to a distributed server by a send job.
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