• Journal of Information Technology Applications and Management
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• v.16 no.4
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• pp.245-261
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• 2009

Since XML emerged as a standard for data exchange on the web, it has been widely used for applications like e-Commerce, CRM, and BI. However, it is common that most of business data is stored in relational database systems, and it is expected that business data management would still be centered around the relational database systems. As such, the technique of viewing relational data as XML and processing XML queries against it is required. To meet such a need, in the SQL/XML standard, the functions to publish relational data as XML are provided. In this paper, we propose the techniques of providing an XML view of relational data defined by an SQL/XML statement in DTD(Document Type Definition), and of processing XPath queries against the XML view by translating them into SQL/XML statements, and describe the validation of such techniques through implementation and tests.

• Proceedings of the Korea Information Processing Society Conference
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• 2002.11c
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• pp.1915-1918
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• 2002

Managing semistructured data needs fine granularity such as markup elements. XML has major effect in managing web content, it enables content reusability, enriches information with metadata, ensures valid document links, etc. We introduce our content model as an integrated work which handles content objects as controllable units. The paper concerns on modeling news site and how the content is classified due to the site structure, aggregated content and reusability. The model stores instance XML document into relation database using fragmentation strategy.

• The KIPS Transactions:PartD
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• v.9D no.6
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• pp.1127-1136
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• 2002

In the medical field. the desire of the hospital information system based on the advanced computer technology has been increased because hospital staffs wanted to provide better medical services to their patients by using it. So, the electronic medical records have emerged to share and exchange medical and healthcare information stored in database. In this paper. we developed an electronic medical record system using XML. This system includes four modules : data repository. document structure manager, document writter and XML automatic generator. For the purpose of evaluating the usability of the electronic medical records of our system, we also applied it to out-patient medical records in the department of orthopedic surgery.

• Proceedings of the Korean Information Science Society Conference
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• 2006.06c
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• pp.106-108
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• 2006

본 논문은 HWP, DOC와 같은 전자 문서에서 사용자가 제공한 구조적인 규칙과 XML 기반 전자 문서 변환 기법을 이용함으로써, 사용자의 관심 영역에 해당하는 다양한 형태(표, 리스트 등)의 정보를 효과적으로 추출(변환)하여 저장하기 위한 방법에 관한 것이다. 본 논문에서 제시한 시스템은 3가지의 중요한 요소들로 구성되어 있는데, 1)전자문서의 원시 XML 문서로의 변환 방법 2)XML 기반 구조적인 규칙과 작성된 규칙을 이용하여 원시 XML 문서에서 정보를 추출(변환)하는 방법, 3)추출 된 정보에서 최종 XML을 생성하거나 DB에 저장하는 방법이 그것이다. 전자문서의 변환을 위해서 독립적으로 동작하는OCX 기반의 전자문서 변환 데몬(Daemon)을 개발하였고, 사용자의 정보 추출(변환)과정을 돕기 위해서 XSLT를 확장한 형태의 스크립트 언어를 개발하였다. 스크립트 언어는 비교적 간단한 문법 구조를 가지고 있고, 데이터 처리를 위한 자체 정의 함수와 변수를 사용한다. 추출된 정보는 원하는 형태의 데이터 포멧으로 생성하거나 DB에 저장할 수 있다. 본 시스템은 전자 문서 원문 정보에 대한 데이터베이스 구축 및 서비스의 제공, 혹은 구축된 데이터베이스를 이용하여 다양한 현황 통계를 제공하는 분야에서 유용하게 사용할 수 있다. 실제로 연구과제관리시스템과 성과정보시스템에 적용하여 그 성과를 입증하였다.

• Journal of the Korean Society of Safety
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• v.37 no.1
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• pp.41-48
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• 2022

Bridge engineering documents have essential contents that must be referenced continuously throughout a structure's entire life cycle, but research related to the quality of the contents is still lacking. XML schema matching is an excellent technique to improve the quality of stored data; however, it takes excessive computing time when applied to documents with many contents and a deep hierarchical structure, such as bridge engineering documents. Moreover, it requires a manual parametric study for matching elements' weight factors, maintaining a high matching accuracy. This study proposes an efficient weight-factor determination method based on an artificial neural network (ANN) model using the simplified XML schema-matching method proposed in a previous research to reduce the computing time. The ANN model was generated and verified using 580 data of document properties, weight factors, and matching accuracy. The proposed ANN-based schema-matching method showed superiority in terms of accuracy and efficiency compared with the previous study on XML schema matching for bridge engineering documents.

• The Journal of the Korea Contents Association
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• v.4 no.4
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• pp.89-97
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• 2004

Web-Mail Services are implemented with SMTP and POP3 in these days. These web mail services provide not only the basic sending and receiving functions but also additional functions for user. However, the sent and received data are stored in the web mail server. So general web mail users can't process their mail data if they have not access ID for the web mail server. In this paper, we design and implement WMIS (Web Mail Integration System) using XML. In the proposed system, mail data and user's environments in the old web mail system are transformed into XML documents and inserted into database. In order to store XML data into database, we use dynamic document processing method and analyze XML file by record unit. When the users change their mail accounts, they easily can establish the web environments and their mail data. Because the transformed XML document is converted into WML easily, the WMIS can reduce development cost, labors and time.

• The KIPS Transactions:PartD
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• v.12D no.3 s.99
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• pp.439-446
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• 2005

XML is the standard that can manage systematically WWW documents and increase retrieval efficiency. Because XML documents have the information of contents and that of structure in single document, users can get more suitable retrieval result by retrieving the information of content as well as that of logical structure. In this paper, we will propose a method to calculate the weights of XML tags so that the information of XML tag is used to index decision. A proposed method creates term vector and weight vector for XML tags, and calculates weight of tag by reflecting user's retrieval behavior (user's query). And it decides the weights of index terms of XML document by reflecting the weights of tags. And we will perform an evaluation of proposed method by comparison with existing researches using weights of paragraphs.

• The KIPS Transactions:PartD
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• v.14D no.2
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• pp.169-180
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• 2007

This paper discusses a new unsupervised XML document clustering technique based on the function transform and FFT(Fast Fourier Transform). An XML document is transformed into a discrete function based on the hierarchical nesting structure of the elements. The discrete function is, then, transformed into vectors using FFT. The vectors of two documents are compared using a weighted Euclidean distance metric. If the comparison is lower than the pre specified threshold, the two documents are considered similar in the structure and are grouped into the same cluster. XML clustering can be useful for the storage and searching of XML documents. The experiments were conducted with 800 synthetic documents and also with 520 real documents. The experiments showed that the function transform and FFT are effective for the incremental and unsupervised clustering of XML documents similar in structure.

• Proceedings of the Korean Information Science Society Conference
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• 2004.10b
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• pp.181-183
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• 2004

기존의 연관규칙을 생성하는 알고리즘의 문제점을 개선하기 위해 본 논문에서는 XML 문서 클러스터링을 이용하였다. XML 문서 클러스터링을 이용하여 데이터베이스 탐색 횟수 일 조인 개수를 줄여서 수행 속도를 향상시키고, 또한 클러스터링을 통해 얻은 클러스터에서 규칙을 찾기 때문에 기존의 연관규칙 생성 방법에서는 찾지 못했던 규칙들도 찾아낼 수 있다 본 논문에서 사용하는 클러스터링 방법은 XML문서 검색을 위한 3차원 비트맵 인덱싱인 xPlaneb를 사용하여 구현하였다.

• Proceedings of the Korean Information Science Society Conference
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• 2003.04c
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• pp.31-33
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• 2003

XML을 파싱하는 기존의 파싱 Model인 Document Object Model은 메모리 내에 트리 구조와 같은 문서의 컨텐츠를 구성하기 때문에 메모리 사용이 많으며 Event 기반의 Push Model은 Consumer의 상태와 관계없이 파싱된 정보를 이벤트 처리 메소드를 이용함으로 처리의 지연, 처리의 지연을 위한 메모리 사용 등의 단점이 있다. 이에 반해 Pull 파싱 Model은 Client가 파싱의 요청을 하는 Model로써 Streaming Data를 파싱 할 시에 적은 지연시간, 메모리의 효율적인 사용 파싱속도가 신속하다는 장점이 있다. 따라서 본 논문에서는 XML 파서 설계에 있어서 Pull 파싱 모델에 파서 Generator tool인 JFlex와 BYacc/J를 사용하여 기존의 Xml Parser보다 파싱 속도를 향상시키는 Pull 파서의 설계 방법을 제안하고자 한다.