• Proceedings of the Korean Society for Information Management Conference
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• 1999.08a
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• pp.255-259
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• 1999

본 연구는 웹상에 존재하는 메타데이터의 통합이나 그 활용성을 증진시키기 위해서 RDF를 활용하여 상이한 메타데이터 형식에 정의된 기술요소간의 어의적인 연계성을 확보하기 위한 방안에 대한 연구이다. 이를 위해 RDF스키마를 기반으로 연계성 확보의 기반이 되는 공통스키마를 설계하고, 이 스키마의 해당 클래스를 rdf： domain속성값으로 메타데이터 스키마를 설계함으로써 결과적으로 공통스키마를 기준으로 메타데이터 형식상호간 연계성을 갖도록 하였다.

• Journal of the Korean Institute of Intelligent Systems
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• v.19 no.2
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• pp.236-241
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• 2009

Information integration for distributed and heterogeneous data sources is still an open challenging, and schema matching is critical in this process. This paper presents and approach to automatic elements matching between XML application schemas using similarity measure and relaxation labeling. The semantic modeling of XML application schema has also been presented. The similarity measure method considers element categories and their properties. In an effort to achieve an optimal matching, contextual constraints are used in the relaxation labeling method. Based on the semantic modeling of XML application schemas, the compatible constraint coefficients are devised in terms of the structures and semantic relationships as defined in the semantic model. To examine the effectiveness of the proposed methods, an algorithm for XML schema matching has been developed, and corresponding computational experiments show changes of calculated values.

• Journal of Information Technology and Architecture
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• v.10 no.1
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• pp.71-77
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• 2013

XML schema matching is the task of finding semantic correspondences between elements of two schemas. XML schema matching plays an important role in many application, such as schema integration, data integration, data warehousing, data transformation, peer-to-peer data management, semantic web etc. In this paper, we propose an XML element matching algorithm based on rules and structural properties. The proposed algorithm involves classifying elements as unique or non-unique elements according to the structural properties of XML documents and deciding on element matching in accordance with rules. We present experimental results that demonstrate the effectiveness of the proposed approach.

• Journal of the Korea Society of Computer and Information
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• v.7 no.4
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• pp.157-162
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• 2002

In this paper, we implement the XML and data modeling by the UML tool, in which the class diagram is constructed from the sequence diagram after making the use case diagram. For the XML modeling. the guiding line will be presented to transform the UML class into the XML document, and then an example to draw the XML DTD from the UML class will be also shown. Furthermore, through the proposed data modeling, the integrated design methods for the transformation of the UML class into relational database schema. object-relational database schema and object-oriented database schema also will be proposed. Finally, we will be presented schema for each database system.

• Proceedings of the Korean Information Science Society Conference
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• 2001.10a
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• pp.136-138
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• 2001

인터넷과 통신기술의 발전으로 온라인 정보소스와 정보사용자의 수가 증가되었다. 이것은 정보시스템간 특히 데이터베이스간의 통합을 요구한다. 데이터베이스간 통합에 대한 연구는 오래 전부터 시작되었고, 많은 결과들이 발표되고 있다. 기존의 데이터베이스간 통합 방법은 일반적으로 전역데이터모델(Global Data Model)을 제공해야하며, 전역스키마(Global Schema) 작성, 전역스키마와 지역스키마간 번역과 같은 복잡한 작업들을 필요로 한다. 이는 최종 사용자에게 다양한 질의(정보)와 이질적인 지역 데이터베이스들에 대한 단일접근방법을 제공하기 위함이다. 하지만 데이터베이스간 통합이 요구되는 영역에서 필요한 정보만 제공해 준다면 다양한 질의를 제공하기 위한 기존 정보통합시스템들의 요구사항은 오버헤드로 작용한다. 본 논문은 데이터베이스간 통합 시 필요한 정보를 기반으로 데이터베이스간 통합을 하는 I2system(Information Integration System)을 제안한다. 이는 기존의 정보통합방법의 오버헤드를 줄이며, 단순하고 확장성 있는 데이터베이스간 통합을 제공한다.

• The Transactions of the Korea Information Processing Society
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• v.5 no.10
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• pp.2457-2466
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• 1998

본 논문에서는 객체지향 데이터베이스에서 클래스 스키마를 도출하고 도출된 스키마들을 통합하여 하나의 뷰 스키마를 생성하는 방법을 제시한다. 특별히, 객체지향 데이터베이스에서 필요로 하는 part-of 관계에서 적합한 클래스 유도 연산자를 개발하고, 뷰 생성 개념을 프로토타이핑한다. 이와 같은 개념은 다양한 응용 프로그램에 적합하도록 여러 뷰를 생성하므로 데이터베이스에 대한 응용 프로그램들의 효과적인 접근과 관리가 가능하게 된다.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2013.06a
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• pp.252-253
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• 2013

재난이 발생할 가능성이 있을 경우 또는 재난 상황 발생 경우, 정보의 전달이 소외되는 곳이 없도록 하는 것이 중요하다. 이에 따라 국내에서는 재난 경보를 위한 여러 시스템들을 개발하였고 운영하고 있다. 그리고 이러한 시스템들을 통합하기 위해서 통합경보공유프로토콜을 표준으로 제정하였다. 그런데 이 표준은 XML을 사용하나 그 스키마를 함께 제공하지 않아 여러 기능을 사용하는데 있어서 어려움이 생긴다. 이와 같은 문제점을 해결하기 위해서 본 논문은 표준을 바탕으로 XML 스키마를 도출한다.

• The Journal of the Korea Contents Association
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• v.20 no.2
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• pp.689-699
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• 2020

The National Science and Technology Information Center (NDSL) database, which provides academic papers at home and abroad, collects, builds, and manages data collected from various sources. In this study, we analyzed the DB paper schema and DB metadata that are currently constructed and managed to derive an integrated DB schema that can manage the high-value-added papers and manage them efficiently by analyzing distributed DB papers. Also, the final academic information data items were determined through comparison and analysis using the Web of Science and SCOPUS schemas that are currently purchased and possessed. The academic information data items constructed and serviced through this study were summarized into seven papers, authors, abstracts, institutions, themes, journals, and references, and defined as core contents under construction. The integrated DB schema was created through this study, and the results of this study will be used as a basis for constructing the integrated DB collection of high quality academic papers and designing the integrated system.

• Journal of Information Management
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• v.40 no.1
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• pp.217-234
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• 2009

In computer-based virtual lab, a bioscience researcher who wants to obtain bio information first uses a biodiversity-related database to retrieve information on species, ecology and distribution of an organism. The researcher also needs to access gene/protein databases such as GenBank or PDB to find information on the organism's genetic sequence and protein structure. Furthermore, the researcher should search for academic papers containing the information on the organism so that his research is based on comprehensive and accurate information. This series of activities often undermines research efficiency as it takes a lot of time and causes inconvenience on the part of researchers. To solve such inconvenience, we analyzed various methods for integrated search and chosen schema integration. In addition, we analyzed each databases and extracted metadata for designing schema integration. This paper introduces a biological information retrieval system(BIRS) using schema integration and it's interface that will increase research efficiency for bioscience.

• The KIPS Transactions:PartD
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• v.14D no.6
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• pp.701-706
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• 2007

Datawebhouse consists of both web log analysis used for customer management and datawarehouse used for decision support. However, datawebhouse needs complex operations for management in order to transform and integrate data from heterogeneous data sources and distributed systems. We propose a metadata schema in order to enable data integration and data management which are essential in datawebhouse environments. We show that our proposed schema supports datawebhouse development and enables integrated asset management of business information. With ETL metadata for web log extract, we can improve the data processing time of web log.