• Proceedings of the Korean Information Science Society Conference
• /
• 2002.04b
• /
• pp.97-99
• /
• 2002

웹 정보의 교환과 공유를 위해 XML 문서의 필요성이 증가함에 따라 XML 문서의 저장과 검색에 대한 많은 연구들이 현재 진행되고 있다 본 논문에서는 XML 문서를 효과적으로 저장, 검색하는 XML Repository 시스템을 설계한다. XML Repository 시스템은 XML 문서를 관계형 데이터베이스에 저장하고, 관계형 데이터베이스에서 검색하여 XML 문서로 생성할 수 있다. 또한 XML 응용 시스템과 관계형 데이터베이스 시스템 사이에 원활한 연계를 위해서, XML DTD를 관계형 데이터베이스 스키마로의 변환이 가능하다. 본 논문에서는 EJB 컴포넌트를 이용하여 XML 문서를 저장, 검색, 변환 할 수 있는 XML Repository 시스템을 설계하고자 한다.

• The KIPS Transactions:PartD
• /
• v.10D no.1
• /
• pp.13-22
• /
• 2003

Recently, as the Importance of the management on internet documents has highly increased, the research of an XML repository system has been actively made to store, retrieve and manage large XML documents. The version management for XML documents is required in the XML applications such as patent documents, software design and system manual that the modified documents have to be managed. In this paper, we propose a data model based on a fragmentation model that supports document versioning. We also design and implement an XML repository system supporting document versioning. It is shown through Performance evaluation that our system outperforms the existing repository system.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.10 no.10
• /
• pp.2696-2707
• /
• 2009

Although, a number of DBMS vendors are scrambling to extend their products to handle XML, there is a need for a lightweight, DBMS and platform-independent XML repository as well. In this paper, we describe such an XML integrated repository system, that solves the following functions : generating relational schema from XML DTDs for storage of XML documents, importing data from XML documents into relational tables, creating XML documents according to a XMLQL(XML Query Language) from data extracted from a database and synchronizing the replicated XML documents. In the XML repository systems, the efficient change detection techniques for XML documents is required to maintain the consistency of replicated XML data because the same data in the repository can be replicated between so many different XML documents. In this paper, we propose a message digest based change detection technique to maintain the consistency of replicated data between client XML documents and a XML data in XML repository systems.

• Proceedings of the Korean Operations and Management Science Society Conference
• /
• 2000.04a
• /
• pp.649-652
• /
• 2000

현대 산업에 있어 그 비중이 급속히 증가하고 있는 물류산업의 효율적인 업무 처리와 국제 경쟁력 확보를 위하여 물류정보시스템 구축이 활발히 진행되고 있다. 이는 컴퓨터 기술의 발달과 함께 시간, 인력 및 비용이 많이 소요되던 종래의 거래서류 처리업무를 EDI 로 처리함으로써 가능해졌다고 볼 수 있다. 거의 30 여년간 기업간 온라인 상거래의 기본 수단으로 이용되어 온 EDI 의 동적인 변화 대응부족이나 고가의 네트워크 유지비용 등의 문제점을 극복하기 위해 유연한 변화수용 능력과 뛰어난 확장성을 가진 차세대 웹 문서인 XML을 이용한 XML/EDI가 등장하였다. XML/EDI는 XML, EDI, Agent, Template, Repository 의 5 가지 요소로 구성되어 있으며, 다른 요소들의 기본이 되는 Repository 는 거래에 필요한XML/EDI 태그들의 정의 및 의미를 저장하고 있으며 거래 당사자들이 검색하여 볼 수 있는 인터넷상의 공유 디렉토리를 말한다. 본 연구는 XML/EDI 물류정보시스템 구축을 위한 전 단계로서 현재 개념 적으로만 정립되어 있는 Global XML Repository 의 구성에 관한 연구이다. 특히 KEDIFACT 표준을 따르는 물류 EDI 를 바탕으로 Global XML Repository 내의 구성요소들을 정의하고 체계적으로 분류하는 것을 중점적으로 연구하였다.

• Journal of KIISE:Computing Practices and Letters
• /
• v.12 no.3
• /
• pp.160-169
• /
• 2006

The goal of this paper is to propose a way to register agents so that makes users or autonomousagents to find target agents more conveniently and efficiently. In order to achieve this goal, we first survey the key technologies such as UDDI, ebXML, FIPA DF. As the results, we designed a new agent legistry/repository system based on ebXML technologies. We introduce our agent/repository system for wide area network and describe how to use our system for agent registering and searching target agents for communications. Finally, we give an example to illustrate a typical scenario in which user receives the results from our proposed agent registry/repository system and evaluate its characteristics in terms of advantage.

• The Journal of Society for e-Business Studies
• /
• v.7 no.3
• /
• pp.21-48
• /
• 2002

ebXML is the international technical framework specification that enables Internet-based B2B electronic business using XML, It was standardized by UN/CEFACT and OASIS on May 2001. Registry and Repository is the core of ebXML. It supports registry services which is composed of object management service and object query management service. The object management service manages the object's life cycle and the object query management service provides a mechanism to approach metadata of stored objects. Up to now, implementations of ebXML Registry object query management system don't support full functions of the specification completely. We implemented all the functions of ebXML Registry Service Specification vl.0. This system supports Browse ＆ Drilldown Query, Filter Query, SQL Query, and Object Retrieval Query services. And it also supports Content-based Query service which is not specified in the ebXML RS specification. The Content-based Query service is a repository service which makes it possible In pose content based queries of repository items and which will be specified on the RS specification v2.0.

• The Journal of Society for e-Business Studies
• /
• v.8 no.1
• /
• pp.103-111
• /
• 2003

Nowadays XML is used for exchanging information in e-Commerce, especially B2B. Necessity of XML DBMS has being increased to efficiently process XML data. So a lots of database products for supporting XML are rapidly appeared in the market. In this paper, we made an XML DBMS system based on Generic Data Model. First we developed XML Adaptor based on Generic Data Model and added it on relational DBMS for developing XML DBMS. XML Adaptor is composed of Query Convertor and XML Repository System. The Query Convertor parse commands that are for XML data manipulation and then call the relevant component of XML Repository System for relational database operation. The XML Repository System handles relational database operations such as create, delete, store, and etc. In this way we can use a relational DBMS for manipulation XML data. Therefor we can build more economically XML DBMS.

• Proceedings of the Korean Information Science Society Conference
• /
• 2002.04b
• /
• pp.25-27
• /
• 2002

전자상거래의 효율을 도모하기 위하여 사용되어졌던 XML/EDl이 WEB을 이장한 ebXML로 옮겨가고 있다. ebXML Registry/Repository를 의료망에 이용하면 완자의 수고를 덜 수 있을 뿐만 아니라 의료기술, 신장비 등을 거래 할 수 있다. 본 논문에서는 현재 각 병원에서 구축되어진 전산망을 전제로 ebXML Registry/Repository를 이용하여 두 병원 간에 문서교환, 신기술, 의료장비 거래를 가능하게 하고자 한다. 이를 위해서 ebXML을 분석하고 그에 맞는 ebXML Registry/Repository를 설계하였다. 인터넷을 기반으로 한 본 시스템은 별도의 소프트웨어나 프로세스를 강요하지 않는다. 그럼으로써 환자들의 수고를 덜고 비용을 줄이는데 기여한다.

• Journal of Korea Multimedia Society
• /
• v.12 no.2
• /
• pp.178-190
• /
• 2009

XML is recommended by W3C(World Wide Web) and widely accepted as a standard markup language for expression and sharing data. Recently, increasing the use and the amount of XML documents, there is required that easy methods for accessing XML documents at anytime and anywhere, therefore, the distributed XML repository systems is developed. For this, distributed XML repository systems is necessary to research catalog management schemes. In this paper, we design distributed XML database model considering CPU costs, I/O costs, concurrency control, two-phase commits a protocol, queuing delay and so on. And we implement a simulator in order to execute performance evaluation centralized catalog method, fully replicated catalog method, and partitioned catalog method using reasonably setting up environments.

• Journal of KIISE:Computing Practices and Letters
• /
• v.9 no.6
• /
• pp.589-601
• /
• 2003

XLink is XML Linking Language that defines links between XML documents or XML elements. It uses XML syntax to create structures that can describe links similar to the simple unidirectional hyperlinks of HTML, as well as more sophisticated links. There exist several relationships between resources that linked by XLink. Without supports from XML Repository for these relationship management, there is a huge overhead related to the management of relationships during both application development and maintenance, since the relationships need to be hard-coded directly into the application program itself. In this paper, we propose an XLink supporting system in object repository. We describe the design and implementation of this system on top of XDOM(persistent DOMlink XML repository). To support XLink, our system offers referential relationship semantics, extended link and the expansion of DOM tree for XLink.