multidatabase 中文意思是什麼

multidatabase 解釋
多數據庫
  1. This paper introduces the development of database system and multidatabase system compendiously. the brief researching content is component object model distributed component object model and how to use them in multidatabse system. this paper puts forward the three stratums structured scheme of multidatabase based on component object model and distributed component object model, analyzes its safety mechanism and gives a method of ado visiting

    文中簡要介紹了數據庫系統、多數據庫系統的發展。主要研究內容為組件對象模型、分散式組件對象模型以及如何將其運用到多數據庫系統中。提出了基於組件對象模型分散式組件對象模型的多數據庫系統的三層體系結構方案，分析了該系統的安全機制，並給出了系統的ado訪問方法。
  2. Sometimes the huge relevant information in those databases should be managed unitedly, so, it is getting more and more critical to develop applications for building systems that combine relevant data from database sources and present them in a form which is comprehensible for users beginning with the basic theory of module and distributed multidatabase, this paper discusses the technologies about the ejb, corba component used in the oracle8i / 9i database, the schema integration and query decomposition, schema integration and query decomposition are key segment of this thesis

    某些情況下，這些數據庫中的相關信息需要統一的進行管理，這就迫切需要開發出相應的應用系統來集成多數據庫中的相關數據並使用戶能夠充分的理解。本文首先從組件和分散式多數據庫的基本原理出發，詳細討論了模式集成和查詢分解技術與ejb 、 corba等組件技術在oracle8i 9i數據庫中的應用。數據模式集成和查詢分解是本文探討的重點，也是分散式多數據庫的核心內容。
  3. They are kernel knowledge of distributed multidatabase too0 then, based on a reasonable classified frame of schema collision, the paper probes into the strategies realizing schema integration and query decomposition using the good " low coupling, high cohesion " characteristics of component ; and then, a improved model of federal database architecture is designed exerting the virtue of independence and assembly of component <, at last, i had completed the work of developing a demo for the integration of audit information systems with the helps of others, which proved that the improved model of federal database architecture is practicalo

    我在提出一個合理的模式沖突分類框架的基礎上，探討了如何運用組件技術的低耦合、高內聚的良好特性來實現數據模式集成和查詢分解的策略；同時，運用組件技術的獨立性和可裝配的優點，設計了一個改進的聯邦數據庫體系結構模型。最後，在上述理論的指導下，本人與協作者完成了湖南省審計廳信息集成原型系統的設計和開發，總體上證實了改進后聯邦數據庫體系結構模型的可行性。
  4. Chapter 3 presents a method to represent schema architecture and schema mapping, prescribe an algorithm for decomposition tree. chapter 4 describes the implementation framework of multidatabase query processing, the implementation algorithm of query decomposition, approaches of query in the cmdatabase will be addressed

    第三章提出了多數據庫系統cmdatabase的模式結構及模式映射方法，定義了用於多數據庫查詢處理的樹生成演算法第四章描述了cmdatabase的全局查詢處理的查詢分解演算法。
  5. This paper researches in the key problems in multidatabase, and brings forward the algorithm to resolve these problems which remedy the shortage in multidatabase research area

    本文通過對多庫系統中幾個關鍵技術的研究，提出了新的解決方法和演算法，彌補了目前多庫系統研究領域的某些不足。
  6. The results of experiments indicates that it is necessary and feasible to introduce component program designing idea into multidatabase system. comparing withtraditional multidatabse system the one based on com / dcom has advantages : adjusting flexibility arraying trustiness and safety

    與傳統的多數據庫系統相比，基於組件對象模型分散式組件對象模型的多數據庫系統具有以下優點：可伸縮性、可配置性、靈活性、可靠性、安全性。
  7. 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。
  8. In multidatabase, access to global view will be decomposed to several sub - operations to several ldb, and perhaps also need data schema translation and query processing

    在多庫系統中，對全局視圖的存取操作要分解為針對多個ldb的子操作，可能還要對數據模式及查詢語言進行轉換。
  9. This paper uses component program designing idea and provides a feasible scheme for integrating existing database systems which coexist into a multidatabase

    本文針對目前共存的數據庫系統，採用組件化程序設計思想，為現有的數據庫系統集成為一個多數據庫系統提供一種可行的方案。
  10. In this thesis, schema integration global query decomposition and optimization and global transactions manipulation in multidatabase systems are discoursed elaboratly. the algorithm which clears up one - to - one entity conflict and query process optimization algorithm are presented and analysiz. ed. the assurance strategy of transaction atomity and global deadlock resolution algorithm are also discussed in this thesis. at end of this thesis, based on domestic experiences and overseas experiences, a new multidatabase system model is presented by combining multidatabase system and corba technology, and security management mechanism is introduced in this model

    本文對多數據庫系統中模式集成、全局查詢的分解和優化以及全局事務的處理等問題進行了詳細而深入的論述，給出了一對一實體沖突的消解演算法和查詢處理優化演算法，並對這些演算法進行了分析；同時還論述了事務原子性的保證策略和全局死鎖的處理演算法。最後，本文在借鑒國內外經驗的基礎上，把通用對象請求代理結構技術與多數據庫系統結合起來，提出了一個新的多數據庫系統模型，在該模型中引入了安全管理機制。
  11. Once the view is created by outjoin, those existing algorithms may fail in view maintenance. this paper introduce a new view maintenance algorithm, which can handle view involving outjoin, regular join and data inconsistency. moreover, our maintenance mechanism minimizes the number of the queries that need to be sent to the local database systems for view maintenance, which is an efficient way to make the multidatabase system more efficient

    針對傳統的視圖維護演算法在有外連接或數據不一致的情況下會出現錯誤的問題，本文提出了一種新的視圖維護演算法： vmdt演算法，該演算法不僅解決了外連接及數據不一致問題，而且最大限度地減少了國防科學技術大學研究生院學位論文mdbs與ldb之間的通信量，解決了嵌套異常問題。
  12. Multidatabase can shield the user and application from the difference of local database, and provide global transaction management, and maintain consistency of data within the local database. multidatabase technology has been accepted in the world

    多庫系統為用戶和應用程序屏蔽了底層數據庫操作環境的差異，提供全局事務處理能力，並維護各結點上ldb的數據一致性，從較深的層次解決了異構數據庫互操作問題。
  13. Study on a distributed multidatabase system architecture

    一種分散式多數據庫系統結構研究
  14. Panorama multidatabase prototype

    多數據庫原型系統
  15. Design and realization of the local database push - pull mechanism and up - pusher in multidatabase middleware

    多數據庫中間件上推規則與上推機的設計與實現
  16. This paper is organized as follows : chapter 1 introduces the development of mdbs. it also gives a definition and the characteristics of a multidatabase system

    第一章介紹了多數據庫系統的概念、特徵以及多數據庫系統在國內外地研究狀況。
  17. Massachusetts institute of technology, 1997. 15 won kim, jungyun seo, unisql, inc. classifying schematic and data heterogeneity in multidatabase systems

    系統實現證明，它可以有效解決大部分實際應用中的語義沖突，並且保證領域通用性和集成模型無關性。
  18. A multidatabase system ( mdbs ) is a system that supports data sharing and integrating of a collection of pre - existing heterogeneous, distributed local database systems

    多數據庫系統主要是解決已存的、異構的、分佈的多個局部數據庫系統之間數據共享和集成的問題。
  19. If each accessing to global view must be translated into accessing to ldb, the cost will be very expensive. so there are materialized views in most multidatabase

    如果每一次對全局視圖的訪問都要轉換為對底層數據庫的訪問，代價是很昂貴的，所以多庫系統中一般都保持一個物理的全局視圖。
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