decomposition query algorithm 中文意思是什麼
decomposition query algorithm
解釋
分解查詢演算法- decomposition : n. 1. 分解，分析，溶解，還原（作用）。2. 腐朽，解體。
- query : n 1 質問；詢問；疑問，懷疑。2 敢問，請問〈在疑問句前單獨使用〉。3 【印刷】（打在原稿或校樣上的）...
- algorithm : n. 【數學】演算法；規則系統；演段。
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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。 -
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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