隨著社會(huì)的發(fā)展, 越來(lái)越多的企業(yè)開(kāi)始將工作重心向集成體系結(jié)構(gòu)轉(zhuǎn)移。因此,對(duì)異構(gòu)
信息源集成的要求是非常迫切并會(huì)長(zhǎng)期存在下去。本文提出了一種基于Java 的關(guān)系數(shù)據(jù)模型(JIDM)作為集成系統(tǒng)的公共數(shù)據(jù)模型。在該模型的基礎(chǔ)上,介紹了全局模式、輸出模式以及局部模式之間的映射關(guān)系,解決了JIDM 模型與關(guān)系模型、XML 文件以及面向?qū)ο竽Ｐ椭g的映射問(wèn)題。
關(guān)鍵字: 信息集成,模式映射,關(guān)系數(shù)據(jù)模型
Abstract: With the development of the society, more and more enterprises have set up to change their focus to the structure of system integration. So, the needs for the integration of
heterogeneous data sources will be urgent and last long. The dissertation presents a common data model (JIDM) which is a relational data model based on java. The mapping between global schema, export schema and local schema is presented based on the model, which solves the problem of mapping between JIDM and relational data, XML files, object-oriented data model.
Keywords: Information Integration, Schema Mapping, Relational Data Model