concurrency control method 中文意思是什麼

concurrency control method 解釋
并行性控制方法
  • concurrency : 並發性
  • control : n 1 支配，管理，管制，統制，控制；監督。2 抑制（力）；壓制，節制，拘束；【農業】防治。3 檢查；核...
  • method : n 1 方法，方式；順序。2 （思想、言談上的）條理，規律，秩序。3 【生物學】分類法。4 〈M 〉【戲劇】...
  1. This paper posts some new design methods 1 ) blurred simple code input method raise working efficiency 2 ) a standard method about the join of ado and database 3 ) open and lock table method for solving concurrency control about table. this research is only an initial investigation in prompting restaurant information management. but it can develop continuely with the growth of science

    針對中小型飯店管理中迫切需要解決的問題充分結合計算機管理系統的開發方法和計算機網路技術，實現了一種新的模糊簡碼的點菜輸入方式，提高了點菜的工作效率;為解決飯店中餐桌管理的並發性問題，提出了實時鎖開桌解決方法;為與后臺數據庫實現有效地快速連接，設計了ado與ini文件連接的有效方法。
  2. This paper analysis the shortage of traditional concurrency control method in multidatabase and brings froward a new concurrency control algorithm. we also bring forward a new recovery method for multidatabase : synthesis 2pc protocol, which combines many multidatabase recovery methods into one algorithm, and makes the algorithm more useful and more efficient

    本文還提出了一種新的多庫系統恢復機制：綜合2pc協議，它把已有的幾種多庫系統恢復機制結合在一個演算法中使用，使其更適于多庫系統的異構性，應用范圍更為廣泛，效果也更好。
  3. In this paper, we discuss the theories and the implemention method of concurrency control, present a new multilevel transaction model - - - nhstm and apply this model to the concurrency control mechanism for nhsdb, a multilevel security dbms prototype

    本文對安全數據庫並發控制理論和實現方法進行討論，提出了nhstm多級事務模型，並將該模型應用於nhsdb多級安全數據庫的並發控制機制中。
  4. Implementation of practical concurrency control with interrelated - element - order method

    用相關元素定序法實現樂觀並發控制
  5. As the application of distributed computing is used much more widely ， distributed database becomes a significant part of information management it avoids a lot of disadvantages of conventional centralized database ， and is applicable to many situations distributed database is a set of data which is the unity logic ， but in fact these data is located on different sites it is of high availability ， easy expansibility ， high concurrency ， high efficiency and etc in distributed system ， data redundancy is a method to improve the speed of query and the availability of system distributed query should shield the lower level details of data redundancy from end users ， distributed transaction should ensure data from disaccord this paper introduces basic conceptions of distributed database firstly ， discusses distributed transaction and concurrent control ， describes the development prototype mysql ’ s characters ， architecture and executive mechanism ， then shows the skeleton model of dpsql and exposes the strategy and algorithm of distributed query and distributed transaction ， at last analyzes the extra expenses and response delay of distributed processes this paper exposes the implementation mechanism of distributed query and distributed transaction emphatically distributed query uses the strategy of “ read one ， write a11 ” s0 in such a system if user ’ s requests are read - - only for the most part and the distribution of data redundancy is plausible ， efficiency is very high distributed transaction uses two - 。 phase commit protocol to ensure the consistency of global data ， which has less communication overhead

    分散式查詢需要向用戶屏蔽數據冗餘分散的底層細節，分散式事務處理要保證全局數據完整，這都是傳統集中式數據庫不曾面臨的問題。本文首先介紹了分散式數據庫的概念性問題；接著討論了分散式事務涉及的定義及演算法；然後描述了dpsql的原型mysql的特性、結構和執行機制；繼而給出了dpsql的梗概模型，闡述了實現分散式查詢和分散式事務處理的策略及演算法；最後分析了進行分散式處理給系統增加的額外開銷和客戶端的額外響應延遲。本文重點描述了分散式查詢和分散式事務處理的實現機制，分散式查詢採用」讀一個寫全部」的本地優先策略，在讀操作頻繁的系統中，只要庫的分佈合理，單機效率極高，幾乎無任何附加開銷和延遲，而以整個系統的角度看來，吞吐量就更是優于單機系統；分散式事務處理採用兩階段提交協議，通信次數較少並能確實保證副本一致。
  6. Lock mechanism of that concurrency control can effectively void the dead - lock, two phase commit can guarantee atomicity of the distribute transaction while distributed transaction is executed with which the consistency of the database system is guaranteed. the method of checking the inconsistent is mainly to track the update status of multiple repetitions when distributed and parallel database system is not busy, and to detect inconsistent early. consequently, system can be recovered to best status

    數據庫在執行分散式事務的時候，並發控制的鎖機制可有效的預防分散式事務中的死鎖現象，兩階段的提交協議可以保證分散式事務執行的原子性，從而有效地保證了分散式并行數據庫系統的一致性，不一致性檢測的方法主要是在保證系統非繁忙狀態下對多個副本間的數據庫的更新狀態進行跟蹤，也保證了數據庫多個副本間不一致狀態的及早發現，從而使系統及時地恢復到最佳運行狀態，提高了分散式并行數據庫系統的可用性。
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