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The virtual data integrator: An object-oriented mediator for heterogeneous database integration.

機(jī)譯：虛擬數(shù)據(jù)集成器：用于異構(gòu)數(shù)據(jù)庫集成的面向?qū)ο蟮慕轶w。

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While data within an organization has become increasingly dispersed, the need for a consolidated information view has remained important. Consequently, data integration methods have been the topic of much of today's research. This dissertation concentrates on the development of a feasible knowledge representation and query processing algorithm that create a mediator to process the semantic real-world knowledge of typical application queries. The Virtual Data Integrator (VDI) is an object-oriented data mediator that has been developed as one such solution.; VDI is a software tool that transparently integrates various related databases into a virtual view of an integrated computing environment. The Virtual Data Integrator's knowledge representation (VDIR) is used to portray a global schema of the different database models, and the Virtual Data Integrator's three step query processor (VDIP) semantically translates a query written in terms of one database schema into all of the applicable queries for the other databases. The components, development techniques, underlying foundation for VDI are detailed and illustrated in an example.
機(jī)譯：盡管組織內(nèi)的數(shù)據(jù)越來越分散，但是對統(tǒng)一信息視圖的需求仍然很重要。因此，數(shù)據(jù)集成方法已成為當(dāng)今許多研究的主題。本文主要研究一種可行的知識表示和查詢處理算法的開發(fā)，該算法創(chuàng)建了一個(gè)中介程序來處理典型應(yīng)用程序查詢的語義現(xiàn)實(shí)世界知識。虛擬數(shù)據(jù)集成器（VDI）是一種面向?qū)ο蟮臄?shù)據(jù)中介器，已被開發(fā)為一種這樣的解決方案。 VDI是一種軟件工具，可將各種相關(guān)數(shù)據(jù)庫透明地集成到集成計(jì)算環(huán)境的虛擬視圖中。虛擬數(shù)據(jù)集成商的知識表示（VDIR）用于描述不同數(shù)據(jù)庫模型的全局架構(gòu)，虛擬數(shù)據(jù)集成商的三步查詢處理器（VDIP）在語義上將根據(jù)一種數(shù)據(jù)庫架構(gòu)編寫的查詢轉(zhuǎn)換為所有適用的查詢其他數(shù)據(jù)庫。一個(gè)示例詳細(xì)介紹了VDI的組件，開發(fā)技術(shù)和基礎(chǔ)。

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