• Journal of KIISE:Computing Practices and Letters
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• v.9 no.6
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• pp.610-622
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• 2003

Metadata Registry was developed to dynamically manage metadata and to increase interoperability between various and heterogeneous metadata. The built metadata registry can be used as a standard guideline for creation of new databases and it provides a radical data integration mechanism. However, in the situation that an enormous databases must be integrated progressively, there is a limit to the existing metadata-based approach. In case that each database has no statistical information for its use rate and the restricted cost is given to us for a unit time, existing metadata-based approaches do not provide how to select some databases to be preferentially integrated and to build a metadata registry progressively, In this paper, we propose a methodology that can create progressively metadata registries in the case. The proposed methodology is based on data visibility and hierarchical metadata registry. We also describe the system that have been developed for applying the methodology to a real domain, and then described its results.

• Journal of KIISE:Computing Practices and Letters
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• v.10 no.6
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• pp.472-483
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• 2004

Many metadata registry management systems have been developed, which are based on ISO/IEC ll179. However, they do not follow the international standard, ISO/IEC ll179 nor provide some of mandatory functions. It is difficult to a develop metadata registry management system for domestic environment because of their hidden implementations. The goals of this paper are to solve the problems of the existing systems and to develop a metadata registry management systems for accumulation of primitive technologies. This paper also shows the metadata registry building process for the science and technology information field using the developed system. This system consists of Metadata Registry Layer, Core Component Layer, Extension Layer, and Service Interface Layer. The developed metadata registry management system follows ISO/IEC ll179 and contains mandatory functions for practical use. Therefore, it can be used as a guideline for building metadata registries and a development process of metadata registry management systems. We can easily reuse its components for development of metadata registry management systems in various fields because the system is designed and implemented based on the component-based development methodology. It also decreases time and cost for developing systems.

• Journal of KIISE:Databases
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• v.31 no.6
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• pp.609-623
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• 2004

Various metadata registries have been built in many countries of the world. Although the metadata registry is an international standard, it does not provide a consistent access interface for handling the metadata registries. Therefore, all systems for managing them were developed by using different operations and access interfaces. It requires duplicate efforts on the same operations whenever metadata registry systems are developed. As a result, it causes unnecessary costs and efforts for building metadata registries, and also incurs inconsistency between the metadata registries because the previous developed systems use the different interfaces for the metadata registry elements This paper analyzes and defines operation patterns that are commonly used for the metadata registries. We defined and designed SQL/MDR extended from SQL using the analyzed operation patterns. SQL/MDR provides a standardized access interface for developing metadata registry systems. This paper shows the implementation of SQL/MDR and the result that we actually applied it to the bibliographical databases. By developing the metadata registry systems using SQL/MDR, we can reduce much time and efforts owing to its standard interface. It allows metadata registries to be accessed consistently. Additionally, it makes all metadata registries follow the international standard, ISO/IEC ll179.

• Proceedings of the Korean Information Science Society Conference
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• 2008.06c
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• pp.165-170
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• 2008

다양한 분야에서 ISO/IEC 11179를 기반으로 MDR(Metadata Registry)시스템들이 개발되었다. 그러나 현재 구축된 메타데이타 관리 시스템들은 표준을 따라서 생성되지 않아 메타데이타 간 불일치가 발생하는 문제가 있다. 그리고 메타데이타를 공유하고 교환할 수 있는 표준화된 접근방법을 제공하지 않아 MDR 시스템마다 상이한 방법을 이용하여 개발되는 문제점을 야기한다. 이러한 문제점들을 해결하기 위해 SQL/MDR이 제안되었다. SQL/MDR은 MDR에 대한 사용하기 쉬운 표준 인터페이스를 제공함으로써 반복적인 메타데이터 레지스트리 접근연산 개발 시 메타데이터 레지스트리 간 데이터 불일치를 개선할 수 있게 한다. 그러나 SQL/MDR은 검색을 위한 연산만을 지원할 뿐, MDR 구축 시 접근제어를 위한 연산은 제공하지 않아 정확하고 표준화된 MDR 구축 및 안전한 접근제어를 보장하지 못한다. 이 논문에서는 앞서 언급한 SQL/MDR문제점 중에서 안전한 접근제어를 보장할 수 있는 방법으로 MCL(Metadata Control Language)을 제안한다. MCL은 ISO/IEC 11179 Part 6에서 제안하는 사용자 그룹의 역할과 권한을 미리 정의하여 사용자를 사용자 그룹으로 할당하는 간단한 연산자를 사용함으로써 사용상의 편이성과 보안성을 증대시킨다. 또한 시스템 관리자가 쉽고 정확하게 MDR에 대한 접근제어 규칙을 쉽게 정의할 수 있게 하여 시스템 관리 시간 및 비용을 감소시킨다.

• Proceedings of the Korean Information Science Society Conference
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• 2006.10c
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• pp.291-296
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• 2006

OASIS의 ebXML 레지스트리는 e-비즈니스 컨텐츠 및 이에 대한 표준화된 메타-데이터를 안전하게 저장 및 관리하는 정보 시스템이다. ebXML 레지스트리 내의 e-비즈니스 정보에 대한 메타-데이터의 스키마는 OASIS 표준문서에 미리 정의되어 있으며, 이를 ebXML 레지스트리 정보모델(RIM: Registry information Model)이라 한다. 한편, 전자상거래 환경에서 시맨틱 정보 처리 기술을 도입하여 보다 효율적이고 원활한 상거래를 지원하기 위한 노력의 일환으로, 기존 ebXML 레지스트리에 온톨로지 기반의 시맨틱 정보를 관리 혹은 처리하는 기능을 추가하려는 연구에 많은 관심이 집중되고 있다. 이에 본 연구에서는, OWL 시맨틱 정보 구성자(semantic construct)로 표현된 온톨로지 데이터가 ebXML 레지스트리 내에 관리될 수 있도록 새로운 ebXML 레지스트리 정보 모델, 즉 시맨틱 정보 모델(SIM: Semantic Information Model)을 제시한다. 이를 기반으로 ebXML 레지스트리 내에서 온톨로지 정보의 추론을 이용한 지능형 정보 처리가 가능해진다. 본 논문에서는 온톨로지 데이터를 위한 새로운 ebXML 레지스트리 정보 모델을 제안하며, 아울러 온톨로지 정보 추론을 활용한 지식 처리의 예를 제시한다.

• Journal of KIISE:Software and Applications
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• v.28 no.3
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• pp.249-261
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• 2001

웹 기반의 워크플로우 시스템은 기업간 전자상거래에 필수적인 요소로 부각되고 있다. 그러나 상이한 벤더들에 의해 제작된 워크플로우 엔진들은 상호운영성이 보장되지 않기 때문에 전자상거래의 제기능을 발휘하지 못한다. 이와 같은 문제를 해결하기 위한 노력으로 WfMC(Workflow Management Coalition)에서는 워크플로우 시스템간의 상호운영성을 위한 기본 명세를 제공하고 있으나, 인터넷상에서의 구체적인 활용방안은 제시되지 못하고 있다. 본 논문에서는 워크플로우 시스템 사이의 데이타 교환을 위한 프레임워크(WDEF : Workflow Data Exchange Framwork)를 제시한다. WDEF는 데이타 레지스트리를 중심으로 하여 워크플로우간 상호운영성을 제공하기 위한 메타데이타를 기술하고, 네트워크 상의 자원을 기술하기 위한 기반 기술인 RDF(Resource Description Framework)를 이용하여 워크플로우간의 메시지를 구성한다. 데이타 레지스트리를 이용함으로써, WDEF는 WfMC에서 정의하는 워크플로우 상호운영성을 위한 요구조건들을 모두 수용하면서 보다 확장성 있고 유연한 구조를 가지며, RDF에 기반한 자동적인 XML 인코딩을 통해 전자 상거래에 이용되는 다른 XML문서와도 완벽한 호환성을 가진다.

• The Journal of Society for e-Business Studies
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• v.8 no.3
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• pp.17-36
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• 2003

ebXML is a global electronic business standard that is sponsored by UN/CEFACT and OASIS. ebXML is an open XML-based infrastructure enabling the global use of electronic business information in an interoperable, secure and consistent manner by all parties. ebXML Registry provides a stable store where the business information submitted by partners is made persistent and a set of registry services that enable clients of the Registry to access them. These services are tied to the structures defined in ebXML Registry Information Model(ebRIM), so we need a way to process them according to underlying database systems. In this paper, we present the result of developing the ebXML Registry Server based on Relational Database Systems.

• The Journal of Society for e-Business Studies
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• v.8 no.2
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• pp.63-76
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• 2003

The fundamental technology to the b2b e-commerce framework is Registry. Although Registries have developed, it is yet difficult to apply in actual e-business . That is, the e-business information was stored in physically and/or logically distributed and heterogeneous Registries. And Registry uses the keyword-based search to discovery the information stored. But, the keyword-based search technology can't provide the discovery the business information necessary for parties and trading partners. As spreading the understand of this problem, it requires the technologies for the integration of distributed and various Registries and the systematic definition and intelligent discovery of the e-business information. In this paper we propose the architecture of intelligent and integrated e-business registry system for solving these problems . This system composed of the Registry Integration Query Manager for integrating various registries and the Intelligent Registry Agent providing the systematic organization and discovery of e-business information.

• Journal of KIISE:Databases
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• v.36 no.5
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• pp.386-398
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• 2009

This paper proposes an ontology population model based on ISO/IEC 11179. Much research has recently been done on harmonizing Web 2.0 and the Semantic Web, and the harmonization is defined as Web 3.0. The most important issues for realizing Web 3.0 include defining ontology schemas and populating instances for ontologies. To resolve the issue, Web ontology schemas should be precisely defined, and a method for populating Web ontology from Web resources should be developed. This paper proposes a Web ontology population model based on ISO/IEC 11179 - Metadata Registry (MDR), which is the international standard, developed to manage and use common standard concepts.

• Journal of KIISE:Computing Practices and Letters
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• v.7 no.6
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• pp.614-629
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• 2001

As the information-intensive society in 21c based on the environment of global internet is promoted, the software is getting more large and complex, and the demand for the software is increasing briskly. So, it becomes an important issue in academic and industrial field to activate reuse by developing and exchanging the standardized component. Currently, the information services as a product type of each company are provided in foreign market place for reusing a commercial component, but the components which are serviced in each market place are different, insufficient and unstandardized. That is, construction for Component Data Registry based on ISO 11179, is not accomplished. Hence, the national government has stepped up the plan for sending out public component at 2001. Therefore, the systems as a tool for sharing and exchange of data, have to support the meta-information of standardized component. In this paper, we will propose the C_MDR system: a tool to register and manage the standardized meta-information, based upon ISO 11179, for the commercialized common component. The purpose of this system is to systemically share and exchange the data in chain of acceleration of reusing the component. So, we will show the platform of specification for the component meta-information, then define the meta-information according to this platform, also represent the meta-information using XML for enhancing the interoperability of information with other system. Moreover, we will show that three-layered expression make modeling to be simple and understandable. The implementation of this system is to construct a prototype system of the component meta-information through the internet on www, this system uses ASP as a development language and RDBMS Oracle for PC. Thus, we may expect the standardization of the exchanged component metadata, and be able to apply to the exchanged reuse tool.