• 한국IT서비스학회:학술대회논문집
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• 2006.11a
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• pp.170-176
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• 2006

B2B registries are information systems to registrate B2B related business information such as companies' profiles, business documents, business processes, services and to provide query facilities to find information about potential business partners. In this study, we focus on the design of the repository for B2B business processes. In this paper, a metadata ontology is designed to registrate B2B business processes. In practice, there are several competitive business process definition languages such as ebXML BPSS (Business Process Specification Schema), WSBPEL (Web Service Business Process Execution Language), BPMN (Business Process Modeling Notation), and so on. In order to registrate business processes based on different representation frameworks, the proposed metadata ontology consist of three layers, common metadata, language-specific metadata, and interrelationship metadata. To implement the proposed metadata ontology using ebXML registry, metadata mapping scheme to ebRIM (ebXML Registry Information Model) are also suggested.

• ETRI Journal
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• v.27 no.4
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• pp.367-376
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• 2005

SQL/MDR is a metadata registry query language used to consistently exchange and share the data between distributed metadata registries. It is an extension of the international SQL and is familiar to most database builders and administrators. It provides many advantages such as simplicity of query language, ease of use, an independent description for distributed querying, low cost for adding new systems, simplicity of exchanging mechanism, and so on. The goal of this paper is to evaluate and show its merits quantitatively. To achieve this goal, we define simulation models to compare with an existing approach and then describe the evaluation results. In the quantitative evaluation results, the good points of SQL/MDR can be identified and known.

• 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.

• Journal of the Korea Society of Computer and Information
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• v.14 no.1
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• pp.25-33
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• 2009

In various fields, ISO/IEC 11179-based MDR (Metadata Registry) systems have been developed. However, the current systems do not observe the standard, so inconsistency issue between metadata arises. Most of all, there exist several problems because ISO/IEC 11179 provides no standardized access method. SQL/MDR has been suggested to resolve those problems. SQL/MDR supports search operations, but it does not provide operations for vaild building and safe access for MDR. This paper, in the aforementioned issues, suggests MCL(Metadata Control Language) to guarantee safe and easy access control. MCL offers predefined roles and authority of user groups defined in ISO/IEC 11179 Part 6, and users are assigned to a proper user group. With such a way, MCL increases usability and security.

• The KIPS Transactions:PartD
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• v.14D no.4 s.114
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• pp.435-446
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• 2007

B2B registries are information systems to register B2B related business information such as companies' profiles, business documents, business processes, and services and to provide query facilities to find information about potential business partners. Focusing on the design of the registry for B2B business processes, in this paper, a metadata ontology is designed to register B2B business processes. In practice, there are several competitive business process definition languages such as ebXML BPSS (Business Process Specification Schema), WSBPEL (Web Service Business Process Execution Language), BPMN (Business Process Modeling Notation), and so on. In order to register heterogeneous business processes based on different representation frameworks, the proposed metadata ontology consists of three layers, common metadata, language-specific metadata, and interrelationship metadata. To show the usefulness of the proposed metadata ontology, two examples which are represented by ebXML BPSS and WSBPEL respectively are described in order to show how the proposed metadata ontology is used to registry B2B business processes. To implement the proposed metadata ontology using ebXML registry, metadata mapping scheme to ebRIM (ebXML Registry Information Model) is also suggested.

• Proceedings of the Korean Society of Computer Information Conference
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• 2009.01a
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• pp.1-4
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• 2009

이 논문에서는 메타데이터 레지스트리(ISO/IEC 11179: Metadata Registry)들이 가지고 있는 메타데이터 정보를 검색하고, 공유하기 위해 일관성 있는 질의 언어를 제안한다 메타데이터 레지스트리는 국제 표준으로서 메타데이터들을 정의하고 이들을 관리 및 공유를 하기 위해 만들어졌다. 이와 같은 국제 표준을 기반으로 한 메타데이터 레지스트리들이 서지, 환경, 의료 분야 등의 다양한 영역에서 사용되고 있다. 이와 함께 메타데이터 레지스트리를 기반으로 하여 기존에 저장된 메타데이터들을 검색하고, 공유하고, 관리하고자 하는 이슈에 대한 연구가 진행되고 있다. 하지만 현재까지 다양한 분야에 있는 메타데이터 레지스트리가 가지고 있는 정보를 가져오기 위한 표준 인터페이스가 제공되고 있지 않다. 이러한 문제를 해결하기 위한 연구로 SQL에 메타데이터 레지스트리를 위한 공통 연산자들을 추가하여 메타데이터 레지스트리에 존재하는 데이터들을 활용하는 연구가 있다. 하지만 이런 연산자들을 이용하기 위해서는 상용 DBMS 엔진에 추가되어야 하며, 연산자들이 없는 경우 일관된 질의어를 수행할 수 없다는 문제를 가지고 있다. 따라서 이 논문에서는 이와 같은 문제를 해결하기 위해서 국제 표준인 SQL(ISO/IEC 9075) 에서 정의하고 있는 사용자 정의 타입(User-defined types) 을 기반으로 한 일관성 질의 언어를 제안한다.

• Proceedings of the Korean Information Science Society Conference
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• 2003.10b
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• pp.130-132
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• 2003

현재 세계 각국에서 많은 메타데이터 레지스트리들이 구축되어 왔다 그러나 메타데이터 레지스트리가 국제 표준(ISO/IEC 11179)임에도 불구하고 일관성 있는 표준 접근 인터페이스를 제공하지 않음으로써 각각 다른 연산으로 구현되었다. 이는 각각의 메타데이터 레지스트리 구축시 동일한 연산 패턴의 중복된 구현으로 인한 불필요한 비용을 야기한다. 국제 표준인 메타데이터 레지스트리에 대한 접근시 시스템 마다 동일한 연산 패턴을 지니게 된다. 이 논문에서는 이와 같이 메타데이터 레지스트리에서 공통적으로 사용되는 연산 패턴을 분석하고 정의한다. 또한 분석된 연산 패턴을 이용하여 표준 SQL을 확장한 SQL/MDR을 정의하고 설계한다. 설계된 SOL/MDR은 메타데이터 레지스트리 관리 시스템 개발에 표준 접근 방법을 제공한다. 또한 이는 개별적인 개발로 인한 추가적인 노력을 감소시키고 메타데이터 레지스트리에 대한 보다 일관성 있는 접근을 가능하게 한다.