conventional database system 中文意思是什麼

conventional database system 解釋
常規數據庫系統
  • conventional : adj 1 因襲的，傳統的。2 習用的；平常的，常規的；形式上的。3 約定的，協定的；會議的。n ism 依從俗...
  • system : n 1 體系，系統；分類法；組織；設備，裝置。2 方式；方法；作業方法。3 制度；主義。4 次序，規律。5 ...
  1. In addition, it had founded the database and universal post processing in the software for facilitating user to operate. the cam - designed cad / cam system software can design conventional types of cam, own the advanced curves approximation and complete function, so it should has great practical and theoretical value

    本篇論文從設計的原理、設計的方法和設計的步驟等方面詳細闡述了對各類凸輪的設計過程，並從軟體的整體設計和各組成模塊設計等方面說明了軟體的實現方法，同時通過軟體的使用和操作一章來讓用戶對軟體的操作更加明確。
  2. R extracts remote sense information and conventional information to establish special analysis information system about water resource in longkou city which includes special database and attributive database ~ based on the analysis of database, ten water resource mathematical calculation models have been set up, i. e. precipitation, runoff, groundwater, evaporation, discharge, utilizable water resources degree, industry and living with horton geomorphology and g theory

    提取遙感信息和常規信息，建立龍口市水資源時空分析基礎數據庫，包括空間數據庫和屬性數據庫。基於基礎數據庫的分析，以horton地貌律和g理論為指導，建立降水量、徑流、地下水、蒸發量、水資源可利用量、工農業及生活用水量等十種水資源數學計算模型，即構建起模型庫。
  3. An especial mode has been adopted to realize this system, which is different from the conventional mode of realizing expert system. it includes the two aspects : one is using modern database technology to organizing the repository of ipdaes and other aiding databases in order to realize sharing data ; the other is using advanced programming language with the character of object - oriented to realize the inference engine of ipdaes, which absorbs the heuristic merits of windows " helping systems to make the reasoning process easily understood by the means of including the explaining module into the inference engine

    系統採用了與傳統專家系統實現不同的方式：以數據庫的形式實現知識庫，將知識庫與其他輔助數據庫融合在一起，方便數據共享和傳遞；面向對象高級語言與數據庫管理系統相結合以實現推理機制，借鑒windows標準幫助系統啟發式幫助用戶一步一步地尋找故障原因的優點，將解釋功能蘊含于推理求解的過程中，使之趨於人性化，推理過程更清晰，更易理解和使用。
  4. From 1990, the medicine enterprises in america and japan utilize present information network technique widely to fill in handwork order treatment scheme, the orders which made by conventional edi, portable order processing system and internet occupied 90 % of total orders, e - business become a leading mode. not only advanced core competitive power, but also become a chain of value added service. on the other hand, chinese medicine enterprise face the huge market pressure, because the foreign medicine enterprise already utilized advanced accommodate chain management, high power network and database system

    從20世紀90年代後期，美、日等國的醫藥企業就已廣泛利用現代信息網路技術替代手工訂單處理流程，通過傳統的edi 、便攜式訂單處理系統和網際網路生成的訂單占訂單總數的90 % ，電子商務成為主流銷售模式，不但提高了其核心競爭力，本身也成為一系列的增值服務內容。
  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。
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