database synchronization 中文意思是什麼
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Also we design a link state database storage scheme of distributed storage and redundance backup which ease the implementation of the routing table computation in routing node and synchronization between neighbor routers
同時對域內鏈路狀態數據庫採用了分散式存儲、冗餘備份的方案，易於實現各節點上的路由表計算及路由器間的同步。 -
During synchronization, changes from the publisher might not be applied to the subscriber database because of data locks
同步過程中，由於數據鎖定的原因，在發布服務器上所做的更改可能不會應用於訂閱服務器數據庫。 -
The synchronization and replication is also an essential technology of mobile database. comparing trade distributed database environment, mobile computing environment has characteristics of high frequency disconnection, network condition diversity, network communications dissymmetry and so on
移動計算環境與傳統的分散式計算環境相比有頻繁的斷接性、網路條件的多樣性以及網路通信的非對稱性等特點，這些特點使得傳統的分散式數據庫技術不能有效支持移動計算環境。 -
Distribute database method is adopted in the designing, drawing flow chart, bringing forward the security technology of distribute database, solving the problem of data synchronization and file comeback
設計中採用數據庫分散式設計方法，繪制了數據流程圖，提出了分散式數據庫安全技術，解決了數據同步和數據庫文件恢復問題。 -
Based on the degree of urgency of going into graceful ospf restart, the reason of graceful ospf restart is divided into software - restart and hardware - restart, and the way of graceful ospf restart is divided into pre - restart mode and post - restart mode accordingly. after the compare with the traditional ospf realization method and the analysis on the mechanism of the trigger of graceful ospf restart and synchronization of link state database and the exchanging with the route management module ( rtm ), it is figured out that how to choose the restart mode and how to switch from pre - restart mode to post - restart mode, and how to synchronize the link state database, and how to define the interface and process flow exchanging with protocol supporting module, and how to deal with the forwarding table on the condition of multiple route protocols who also have the capability of graceful restart. finally, the idea of graceful ospf restart with two modes above was realized in the t series routers that belong to a telecommunication corporation
本文首先找出了引起溫和重啟的各種原因，然後根據溫和重啟的緊迫程度，提出把溫和重啟的原因分為硬重啟與軟重啟，並設計相應的前啟動模式與后啟動模式;結合傳統ospf協議的實現方法，通過對其觸發機制、數據庫同步機制、與支撐模塊的交互機制以及多協議同時重啟時路由同步機制的分析，解決了在溫和重啟過程中啟動模式如何選擇與切換、數據庫如何同步、與協議支撐介面如何定義與交互的問題，並揭示出在多協議同時進行溫和重啟過程中所必須遵循的一般規律，最終在一個通訊企業的t系列路由器上實現了兩種模式下基於ospf協議的溫和重啟。 -
In order to keep data - synchronization for the database of company and ship, data file has been created from renewed database information in sql server2000
為了使岸基系統和船載系統的數據庫保持數據同步，在sqlserver2000中，將更新了的數據庫信息生成數據文件。 -
Aimed at the two nodus : the mapping of heterogeneous data ; and the realization of conflict disposed mechanism, we introduced basic conceptions ; general technology, study out a method to realize the synchronization of data in those heterogeneous database based on mobile computing environment
針對數據同步技術的兩大要點難點：異構數據的映射問題和沖突處理機制的實現，在簡介其基本概念和常用技術后，擬定出基於移動計算環境下異構數據庫數據同步實現的解決思路。 -
These users then have available to them rich client functionality, such as a new collaboration features called the activity explorer, productivity tools, database access tool, search, synchronization, integration with ms office and ms windows, and the ability to work offline
然後，這些用戶就可以使用他們豐富的客戶機功能，比如新的寫作特性activity explorer 、生產率工具、數據庫訪問工具、搜索、同步、與ms office和ms windows的集成，以及離線工作的能力。 -
It divides the whole recovery process into three major steps : log - recovery, agent - recovery, and synchronization. the key idea of this new protocol is to cache new database operations during recovery in agents
該協議使用了代理（ agent ）來緩存在恢復期間新發起的數據庫操作，並在通過日誌完成部分恢復后，依靠這些緩存的操作進行進一步恢復。 -
Further more, the advanced techniques of data synchronization, system customization and system micromation in the field of embedded database are analyzed
在此基礎上，分析了嵌入式數據庫領域中數據同步、系統定製、系統微型化等方面的先進技術。 -
Section 2 studies the database access management technology based on microsoft sql server 2000 which is the nuclear technology of database management module in data synchronization system sever, and emphisizes on ole db database access technology. section 3 introduces two kinds of block cipher algorithm used in data synchronization system. : gost algorithm and rijndael algorithm, meanwhile offers interfaces in which encryption algorithm can be userdefined. this is the necleus of encryption module in data synchronization system server and client. section 4 studies network transmission management technology. this section mainly explores programming model and the network interface technology using completion ports to develop server which is the key technology of network transmission management module in data synchronized system server and client. section 5 introdues the brief using approach in data synchronized system server and client as well as some improvement suggestion
第二部分研究了基於microsoftsolserver2000的數據庫訪問管理技術，著重介紹oledb數據庫訪問技術。它是數據同步系統服務器端數據庫管理模塊的核心技術。第三部分介紹了數據同步系統中利用的兩種分組密碼演算法： gost演算法和rijndael演算法，同時給出了一個用戶可以自定義加密演算法的介面。 -
Considered usual condition in mobile computing enviorenment, the thesis put forward a creative thought - - " more mobility on client, high capability on server ", combined that mobile database has a small capacity, connected and disconnected frequently ; memory database has short latency time, fast data accessibility ; therefore, according to syncml protocol ; based on the frame of data synchronization of heterogeneous database, built a model of rapid synchronization of heterogeneous data, using mobile database technology on client and customized memory database technology on server. through experiments, it has been proved to be a improvement of data synchronization technology, and has been applied to the mobile dispatch system of the china airdrome
論文針對移動計算環境下的普遍應用情況，提出「在低端加強移動性，在高端提供高性能」的創新思想，結合移動數據庫容量小，斷接頻繁；主存數據庫響應時間短，存取數據快的特點，遵循syncml協議，在移動環境下的異構數據庫數據同步模型架構之上，搭建起一個移動客戶端使用移動數據庫技術，服務器端採用定製主存數據庫技術的異構數據快速同步模型，實驗表明，這是對數據同步技術的明顯改善。 -
The time required for synchronization depends essentially on how far the mirror database was behind the principal database at the start of the session measured by the number of log records initially received from the principal server, the work load on the principal database, and the speed of the mirror system
同步所需的時間實質上取決于會話開始時鏡像數據庫滯後於主體數據庫的時間（按最初從主體服務器收到的日誌記錄數計量） 、主體數據庫的工作負荷和鏡像系統的速度。 -
The main researches in the thesis list below : summarize the total development of data synchronization technology in both domestic and abroad, and then analyze the products and protocols of data synchronization at present. research the component and key technology of syncml protocol thoroughly, improve the origin conflict resolution mechanism. a new common multiple database synchronization model ? mdbsm is proposed, it can be used in common data exchange in isomerous databases
主要在以下幾個方面做出了實際的研究工作:總結了目前國內外在數據同步應用的發展情況，對現有的數據同步產品和數據同步協議進行分析;深入研究了syncml協議的各組成部分和關鍵技術，改進原協議的沖突解決設計;給出並實現了一種應用於同步異構數據庫操作的mdbsm模型;最後是同步系統的測試。 -
Changes made to the local database during synchronization could cause a local conflict
在同步過程中對本地數據庫所做的更改會導致本地沖突。 -
This thesis also introduces the software ' s makeup and realization. the software is made up of client and server. in the realization part, particularly introduce some details involved in the software realization, such as the network communication, multi - thread synchronization, shared memory ' s mutually exclusive accessing, and database operation, etc
軟體的構成分為客戶端和服務器端，在實現的部分中，詳細的介紹了軟體實現中涉及的網路通信，多線程的同步，共享數據區的互斥訪問和數據庫的操作等細節。 -
The replica database is kept up - to - date with the master content using the ldap content synchronization protocol
副本數據庫通過使用ldap內容同步協議來與主（數據庫）內容保持一致。 -
The actual use and theory analysis indicate that labwindows / cvi development kit can enhance perfectly system real time measurement and control abilities ; detailed data formats can be transformed easily target database by mfc odbc ; real _ time main memory database directly accessing main memory is a perfect scheme to meet the real time requirement ; priority levels and data view that are designed on system characteristics, can solve primely the problem of time sequence consistency ; ntp can basically meet system time synchronization requirement
理論分析和編程實現結果表明labwindows cvi作為測試控制軟體開發工具對系統實時測試、控制性能有很大的提高； mfcodbc能極其方便地實現對具體的數據格式進行數據轉換；以內存直接尋址方式的實時內存數據庫是解決系統實時性的理想方案；針對系統特點而設計的優先級和數據視圖能很好的解決系統時序一致性問題； ntp協議軟體同步演算法基本滿足系統同步精度要求。 -
By providing a common interface, ldap facilitates synchronization of directories across distributed e - mail and other database servers
Ldap通過提供一個公共介面，方便了分佈在電子郵件和其他數據服務器上多個目錄的同步。 -
The snapshot agent prepares snapshot files containing schema and data of published tables and database objects, stores the files in the snapshot folder, and records synchronization jobs in the distribution database on the distributor
快照代理準備快照文件（其中包含了已發布表和數據庫對象的架構和數據） ，然後將這些文件存儲在快照文件夾中，並在分發服務器中的分發數據庫中記錄同步作業。
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