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    题名: Design Of Distributed Databases on Local Computer Systems with a Multiaccess Network
    作者: 連耀南
    Wah, Benjamin W.;Lien,Yao-Nan
    贡献者: 資科系
    关键词: Broadcast;concurrency control;file allocation;local computer network;miltiaccess bus;priority;query processing;transaction
    日期: 1985-07
    上传时间: 2014-08-28 10:43:26 (UTC+8)
    摘要: Concurrency control, distribution design, and query processing are some of the important issues in the design of distributed databases. In this paper, we have studied these issues with respect to a relational database on a local computer system connected by a multi-access broadcast bus. A broadcast bus allows information to be distributed efficiently, and hence simplifies the solutions to some of these issues. A transaction model that integrates the control strategies in concurrency control and query processing is proposed. In concurrency control, the lock, unlock, and update of data are achieved by a few broadcasts. A dynamic strategy is used in query processing, as less data are transferred when compared to a static strategy. The status information needed in dynamic query processing can be conveniently obtained by broadcasting. Lastly, some NP-hard file placement problems are found to be solvable in polynomial time when updates are broadcast
    關聯: IEEE Transactions on Software Engineering,11(7),606-619
    数据类型: article
    DOI 連結: http://dx.doi.org/10.1109/TSE.1985.232505
    DOI: 10.1109/TSE.1985.232505
    显示于类别:[資訊科學系] 期刊論文

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