hetergeneous 中文意思是什麼
hetergeneous
解釋
異類的-
In this paper, a concept for internet data exchang among hetergeneous databases system using xml middleware is proposed
本文提出了一個基於xml中間件技術實現異構數據庫系統之間信息交換的模型。 -
Through xml interface offered to the current different database system in business websites, the visit to databases in any platform can be implemented. with the help of xml, the visit result can be put out to other platforms in the form of xml and the information exchange is implemented among hetergeneous databases
通過為各商務網站現有的不同數據庫系統提供一個xml介面，外界就可以藉助xml實現對任何平臺下的現有數據庫的訪問，並將訪問結果以xml的形式輸出到其它平臺，從而實現了異構數據庫間的信息交換。 -
There are six chapters in this paper. the concept of hetergensous databases and the importance of data exchange among hetergeneous databases are illustrated in the first chapter. the adopted technology of hetergeneous databases exchange is introduced in the second chapter. and the idea exploring xml implementing hetergeneous databases exchange is proposed. the development of xml and its application are reviewed and the relation of the logical structure of xml and dtd and schema is analyzed in the third chapter. the structure of the system exploring middleware tecknology implementing data exchange among hetergeneous databases is investigated in the fifth chapter. conclusion is given in the sisth chapter as a summary for this paper
全文共分六章：第一章闡述了異構數據庫的概念以及異構數據庫間數據交換的重要性；第二章介紹了通常情況下異構數據庫間數據交換所採用的各種技術，在此基礎上提出了利用xml實現異構數據庫間數據交換的思想；第三章回顧了xml的發展歷程和其主要應用領域，分析了xml的邏輯構成以及dtd和schema的關系；第四章介紹了xml數據庫的基本概念和相關技術並對其使用方法進行了分析；第五章介紹了利用xml中間件技術實現異構數據庫間數據交換時的系統結構以及中間件的實現；第六章對全文進行了總結。 -
In the prototype, a middleware using xml technology is constructed between the client ( or browse ) and database server, the communication between database server and the middleware is based on the xml information and interface. by means of the jdbc interface, we can transporently access hetergeneous databases system. and using xml information that is expressed in a structure, text - based format, we can describe the database information more accuratetly in a general format. at the same time, in order to describe the structure of xml files more clearly, the transpormation from schema has been realized
該模型在客戶端（或瀏覽器方）和數據庫服務器間利用xml技術構建了一中間件，在此模型中，中間件和數據庫服務器之間的通訊是建立在xml信息和jdbc介面之上的。通過jdbc ，可以透明地訪問異構數據庫；藉助于基於文本的結構化的xml信息，可以更精確地以一種通用的語言來描述數據庫信息。同時，為了更精確地描述xml文件自身結構信息，實現了從dtd到xmlschema的轉換。
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