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    • 3. 发明专利
    • Data accessing method and device of distributed database
    • 数据访问方法和分布式数据库的设备
    • JP2007200342A
    • 2007-08-09
    • JP2007061199
    • 2007-03-12
    • Hitachi Ltd株式会社日立製作所
    • TAMURA KIMITAKAKUMAMOTO KUNIOITO MAKOTOHAGA YOICHIYAMAMOTO TOSHIOKOBAYASHI SATOSHIKOISO NORIKOSATO TAKAOYOSHINO KOUICHIRO
    • G06F12/00G06F17/30
    • PROBLEM TO BE SOLVED: To save a storage area by suppressing communication traffic volume due to the inquiry concentration as to locations of data in addition to improvement of operability/scalability capable of easily generating/maintaining a distributed database environment in databases on a plurality of computer systems connected to a network.
      SOLUTION: An access route to the data of a remote database is arbitrarily defined and stored in each local database, when the route is traced, data are automatically retrieved, location information is attached, the data are parallelly retrieved from a plurality of databases even when the location information of the data is not held, the location information of the data is learned during retrieval, and a user is notified of the location information of the data.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:除了能够容易地生成/维护数据库中的分布式数据库环境的可操作性/可扩展性的改进之外,通过抑制与查询集中在一起的数据位置来抑制通信量的存储区域 连接到网络的多个计算机系统。 解决方案:对远程数据库的数据的访问路由被任意定义并存储在每个本地数据库中,当跟踪路由时,自动检索数据,附加位置信息,数据从多个 数据库即使不保持数据的位置信息,也可以在检索期间学习数据的位置信息,并向用户通知数据的位置信息。 版权所有(C)2007,JPO&INPIT