CAJ | 학술논문

网络上存在着大量的可用数据，且多是异构的。由于多种原因，用户很难获取自己需要的数据。数据集成技术为用户提供了一个统一的访问途径，以便获取分散在不同数据源上的数据。文中在对异构关系数据分析的基础上，结合实践中的例子，提出了基于关系代数的异构关系数据集成方法。把关系数据集成分为横向集成和纵向集成，给出了相关的集成理论和方法。将该方法应用于异构关系数据集成中，结果证明是有效的。
망락상존재착대량적가용수거，차다시이구적。유우다충원인，용호흔난획취자기수요적수거。수거집성기술위용호제공료일개통일적방문도경，이편획취분산재불동수거원상적수거。문중재대이구관계수거분석적기출상，결합실천중적례자，제출료기우관계대수적이구관계수거집성방법。파관계수거집성분위횡향집성화종향집성，급출료상관적집성이론화방법。장해방법응용우이구관계수거집성중，결과증명시유효적。
There are a mass of available data on the network,and the majority are heterogeneous. Due to various reasons,it is difficult for users to obtain the data they needed. Data integration technology provides an unified access view for users,in this way they can access scattered data in different data sources conveniently. Based on the analysis of heterogeneous relational data and combined with some ex-amples in practice,the method of heterogeneous relational data integration is presented based on relational algebra. Relational data integra-tion is classified into horizontal integration and vertical integration,putting forward correlative integrated theory and method. The method is applied in the heterogeneous relational data integration,which is proved to be effective.