transaction decomposition 中文意思是什麼
transaction decomposition
解釋
事務分解- transaction : n 1 辦理，處理；交易；業務，事務。2 【法律】和解。3 〈pl 〉（學會等的）會議記錄；學報。4 【心理學...
- decomposition : n. 1. 分解，分析，溶解，還原（作用）。2. 腐朽，解體。
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First, by analysing the disadvangtages of the decomposition and recovery algorithm in the usual security model, a new algorithm of double structure tables, which is suitble for master - slaver structure tables, is presented in this paper. second, in resolving the semantic ambiguity and operational incompleteness easily emerged in master - slaver structure tables, an improved master - slaver structure table model and relative decomposition and recovery algorithm are provided. third, considering the merits and demerits of security model, a multilevel secure transaction model is defined on the basis of security model
本文通過分析以往安全模型的分解和恢復演算法的缺點，提出了一個適合於主從結構表這種雙結構表安全模型的分解和恢復演算法;針對主從結構表安全模型容易產生語義模糊性和操作不完備性等問題，提出了一個改進的主從結構表安全模型，並提出了其分解和恢復可行方法;討論了安全模型的優缺點，定義了建立在安全模型基礎之上的多級安全事務模型，分析了多級事務面臨的眾多難題，提出了一個安全、正確的多級事務調度演算法;根據上述的諸多理論，開發了一個多級安全數據庫管理系統的原型系統。 -
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。
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