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相關文獻
- Schema Integration between Relational and Object-oriented Databases in Object-oriented Multidatabase Systems
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題 名 | Schema Integration between Relational and Object-oriented Databases in Object-oriented Multidatabase Systems=在物件導向多重資料庫系統中關聯式與物件導向資料庫之間的綱要整合 |
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作 者 | 趙景明; | 書刊名 | 東吳經濟商學學報 |
卷 期 | 30 2000.09[民89.09] |
頁 次 | 頁75-98 |
分類號 | 312.13 |
關鍵詞 | 綱要整合; 多重資料庫系統; 異質性資料庫; 分散式資料庫; 物件導向資料庫; Schema integration; Multidatabase systems; Heterogeneous databases; Distributed databases; Object-oriented databases; |
語 文 | 英文(English) |
中文摘要 | 多重資料庫系統通常要維持一個由多個區域資料庫綱要所整合而成的整體資料庫綱要。這篇論文提出一個在物件導向多重資料庫系統中關聯式與物件導向資料庫之間的綱要整合方法。首先我們定義對應宣告,用來敘述兩個區域綱要中的綱要物件之間的對應關係。對應宣告的型式是第一階邏輯述語的型式。接著我們提出整合規則,描述如何依據所敘述的對應宣告朱建構整合綱要。我們所提出的整合規則提供程序式的步驟以及使用基本的整合運算子來重新構造、轉換與整合區域綱要。這些整合運算子是代數式的運算子。我們的方法的主要目標在於方便綱要整合的自動化。 |
英文摘要 | A multidatabase system usually maintains a global schema that is the integration of component database schemas. In this paper, we propose an approach to schema integration between relational and object-oriented databases in object-oriented multidatabase systems. We first define correspondence assertions that specify semantic correspondences between schema objects of two component databases. The correspondence assertions are in the form of predicates in the first-order logic. We then present integration rules that describe how to construct the integrated schema according to the specified correspondence assertions. The integration rules provide algorithmic steps and use primitive integration operators to restructure, transform, and integrate component schemas. The primitive integration operators are algebraic operators. The primary objective of our approach is to facilitate the automation of schema integration. |
本系統中英文摘要資訊取自各篇刊載內容。