Journal of KIISE:Computer Systems and Theory (한국정보과학회논문지:시스템및이론)

Korean Institute of Information Scientists and Engineers (한국정보과학회)
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An XML Schema-based Semantic Data Integration

XML Schema기반 시맨틱 데이타 통합

  • 김동광 (건국대학교 컴퓨터공학과) ;
  • 정갑주 (건국대학교 인터넷멀티미디어 공학부) ;
  • 신효섭 (건국대학교 인터넷미디어공학부) ;
  • 황선태 (국민대학교 컴퓨터학부)
  • Published : 2006.09.01
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Abstract

Cyber-infrastructures for scientific and engineering applications require integrating heterogeneous legacy data in different formats and from various domains. Such data integration raises challenging issues: (1) Support for multiple independently-managed schemas, (2) Ease of schema evolution, and (3) Simple schema mappings. In order to address these issues, we propose a novel approach to semantic integration of scientific data which uses XML schemas and RDF-based schema mappings. In this approach, XML schema al-lows scientists to manage data models intuitively and to use commodity XML DBMS tools. A simple RDF-based ontological representation scheme is used for only structural relations among independently-managed XML schemas from different institutes or domains We present the design and implementation of a prototype system developed for the national cyber-environments for civil engi-neering research activities in Korea (similar to the NEES project in USA) which is called KOCEDgrid (http://www.koced.net).

과학 공학 분야의 사이버 인프라스트럭쳐는 다양한 도메인에서 수행되는 연구 활동을 통해서 얻어지는 다양한 형식의 데이타들뿐만 아니라 이런 데이타를 저장 관리하기 위한 이질적인 저장소들의 통합이 요구되고 있다. 데이타 통합 작업의 어려움은 다음과 같다: (1) 시스템 독립적인 다중 데이타 스키마 지원, (2) 다양하게 변화하는 스키마들의 쉬운 관리, (3) 직관적인 스키마 맵핑. 이 같은 문제를 해결하기 위해서, 우리는 XML Schema를 이용해서 과학 분야의 데이타 모델을 정의하고 RDF기반의 스키마 맵핑을 이용해서 의미적으로 통합할 수 있는 새로운 방법을 제안한다. XML Schema기반의 데이타 모델 정의 방법은 실험 데이타들을 과학자들이 직관적이고 간편하게 표현 할 수 있게 해주며, 이 데이타 모델은 많은 시스템에서 사용중인 XML DBMS를 그대로 이용할 수 있는 장점이 있다. 또한, 스키마 맵핑을 위해서 RDF로 구축된 온톨로지를 이용해서 XML Schema로 정의되어 있는 스키마의 구조적인 관계를 정의하고, 맵핑 정보를 이용해서 통합 질의를 수행한다. 우리는 제안 시스템의 프로토타입을 토목 공학 분야 프로젝트인 KOCED에 적용하였다.

Keywords

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