• Journal of Korea Spatial Information System Society
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• v.11 no.1
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• pp.55-62
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• 2009

In u-GIS environment, we collect spatial data needed through sensor network and provide them with information real-time processed or stored. When information through Internet is requested on Web based applications, it is transmitted in XML. Especially, when requested information includes spatial data, GML, S-XML, and other document that can process spatial data are used. In this processing, real-time stream data processed in DSMS is transformed to S-XML document type and spatial information service based on web receive S-XML document through Internet. Because most of spatial application service use existing spatial DBMS as a storage system, The data used in S-XML and SDBMS needs transformation between themselves. In this paper, we propose S-XML a transformation method using caching of spatial data. The proposed method caches the spatial data part of S-XML to transform S-XML and relational spatial database for providing spatial data efficiently and it transforms cached data without additional transformation cost when a transformation between data in the same region is required. Through proposed method, we show that it reduced the cost of transformation between S-XML documents and spatial information services based on web to provide spatial information in u-GIS environment and increased the performance of query processing through performance evaluation.

• Proceedings of the Korean Information Science Society Conference
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• 2004.04b
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• pp.214-216
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• 2004

XML 문서에 대한 데이터의 통계 정보는 XML 어플리케이션에 유용하다. 특히 XML 어플리케이션에 대해 RDBMS 테이블 형U로 유도하는 방법 중 cost-based approach를 적용할 때 다양한 Schema 변환 중 어플리케이션에 가장 적합한 것을 선택하는 데 사용한다. 본 논문에서는 정차한 통계 정보를 모으기 위해 Shared type과 변환 과정에 생기는 잠재적인 Shared type에 대해 해결한 X2R System을 개발하였고. 효율적으로 통계를 유지하도록 하였다.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.13 no.2
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• pp.149-155
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• 2013

In these days, Entity-Relationship Model is the most popular modeling tool for designing databases, and XML is a de facto standard language for representing and exchanging data. But, because of many commercial products supporting Entity-Relationship Model use their's own representation formats, and thus it gives rise to difficulties the inter-operability between these products. In this paper, we propose an ERX, a generation tool of XML Schema from Entity-Relationship Model. ERX receives an Entity-Relationship Diagram as an input, transforms it based on transformation rules, and generates a XML Schema Definition as an output. Transformation rules contain entity set, relationship set, mapping cardinalities, and generalization.

• Journal of Internet Computing and Services
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• v.3 no.1
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• pp.29-40
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• 2002

The information exchange on the using of XML such as B2B electronic is common. So the efficient method to store XML message in database is needed. Because the ORDBMS is extended to ORDBMS for supporting multimedia application such as Oracle8i, 9i, Informix and SQL2000 server, SQL2, the standard RDB is extended to SQL3 for ORDB, And the XML application based on java such as J2EE is extended. Therefor it is necessary for the efficient connection methods based on JDBC between XML application and database system. In this paper, the methodology a transformation XML DTD to SQL3 schema is proposed. For the transformation, first the methods of transformation XML DTD to object model in UML class diagram are proposed. And then the methods of mapping transferred object models to SQL3 schema are proposed. This approach for transform::1lion XML. DTD to SQL3 schema such as Oracle8i, 9i, Informix and SQL2000 server based on java is proposed in this paper, can be used in database design to build XML applications based on ORDB.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2003.10a
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• pp.500-503
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• 2003

XML been using extensively by standard of data exchanging in the Internet is observed by a technology to replace existent document creation language of HTML etc. Biggest characteristic of this XML is that logic information and physical information that express style of document that do that express structural substance of document were detached. Hereupon, W3C advised XSL that oner style function of form similar to HTML for XML's style and data conversion. Also, XSL's conversion function offers function that change XML document to other data format, and can describe style information through conversion of various document format. But, a XML document conversion technology that use XSLT know-how in domestic is unprepared real condition, and necessity about solution that can edit XSLT document efficiently is putting. This paper does XML document so that conversion and output are available in various document format. And offered research of XSLT document editing system that can edit and create XSLT document efficiently under WYSIWYG environment.

• Proceedings of the Korean Information Science Society Conference
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• 2001.10a
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• pp.40-42
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• 2001

ebXML[1]은 UN/CEFACT와 OASIS가 주축으로 제정한 전자상거래 국제 표준으로 모든 거래 당사자들에게 상호 운용성, 안전 및 일관성 있는 방법으로 XML 기반의 구조를 제공하여 광범위 한 e-business 정보 사용이 가능하도록 하는 것을 목적으로 한다. ebXML Registry/Repository는 ehXML을 기반으로 한 전자상거래 시스템의 핵심 부분을 구성하며 Browse & Drill Down Query Filter Query와 같은 메커니즘을 기본적으로 제공하고 SQL Query를 선택적으로 지원한다. 본 논문에서 RDBMS상에서 Registry 시스템의 필수 질의 서비스인 Filter Query를 구현하기 위해 SQL로의 변놘 방법을 제안하고 적용 예를 설명한다.

• The Journal of Society for e-Business Studies
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• v.13 no.3
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• pp.1-20
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• 2008

Today's computing environment which is getting distributed to communicate with various systems needs dynamic inter-connectivity of the systems. MOM(Message Oriented Middleware) is popularly used for transmitting XML messages among the distributed systems for the inter-connectivity. But, they do not support event-based message routing functionalities with XML transformation for processing effective message routing, which is essential to inter-connectivity, and there is no integrated platform to cope with these requirements. Although event-based message routing and XML transformation have been studied in a wide range of computer science areas, development of message routing systems is considered as a tough job due to the technological difficulties. In order to address these requirements, we proposed a novel system, named RMRS(Rule-based Message Routing System), which supports event-based message routing as well as XML message transformation. To make the proposed system easy to use, we also redesigned ECA(Event- Condition-Action) rule to fit in our system and developed a tool to map source XML structure into target XML structure.

• Proceedings of the Korea Information Processing Society Conference
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• 2005.05a
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• pp.47-50
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• 2005

본 논문에서는 S-XML 미들웨어에서 캐싱을 이용한 효율적인 공간 데이터 변환 기법을 제안한다. 공간 데이터베이스 관리 시스템(SDBMS)을 기반으로 하여 S-XML 을 지원하는 시스템은 SDBMS 에서 사용되는 이진 데이터와 S-XML 간의 상호 변환 과정이 필요하다. 특히 변환 과정에서 공간 데이터는 비공간 데이터에 비해 데이터 크기가 크고, 복잡한 동시에 다양한 데이터 형식을 가지고 있어 비공간 데이터에 비해 변환 비용이 크다. 따라서 공간 데이터의 특성을 고려한 변환 비용 감소 기법이 필요하다. 제안 기법은 SDBMS 의 질의 처리 결과인 이진 데이터를 S-XML 문서로 변환하고, S-XML 미들웨어의 캐싱 관리자에서 공간 데이터에 해당하는 부분만을 캐싱 한다. 캐싱 관리자는 질의를 점 질의와 영역 질의로 구분한다. 점 질의의 결과에 대해서는 공간 데이터의 OID 를 키 값으로 하는 해쉬 색인을 사용하며, 영역 질의 결과에 대해서는 질의에서 표현된 MBR 에 따라 R-Tree 색인을 사용한다. 변환 과정에서 요구되는 공간 데이터가 캐싱된 데이터로 존재하면 질의 종류에 따른 색인을 사용하여 데이터를 추출하고 이를 S-XML 데이터로 치환한다. 캐싱 데이터를 이용한 공간 데이터 변환 기법에 의해 공간 데이터의 변환 비용을 줄임으로써 S-XML 미들웨어 에서의 변환 시간을 단축할 수 있다.

• The Journal of Information Technology and Database
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• v.7 no.2
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• pp.17-32
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• 2000

As XML emerging as the Internet electronic document language standard of the next generation, the number of XML documents which contain vast amount of Information is increasing substantially through the transformation of existing documents to XML documents or the appearance of new XML documents. Consequently, XML document retrieval system becomes extremely essential for searching through a large quantity of XML documents that are storied in and managed by DBMS. In this paper we describe the design and implementation of BADA-IV/XML query processor that supports content-based, structure-based and attribute-based retrieval. We design XML query language based upon XQL (XML Query Language) of W3C and tightly-coupled with OQL (a query language for object-oriented database). XML document is stored and maintained in BADA-IV, which is an object-oriented database management system developed by ETRI (Electronics and Telecommunications Research Institute) The storage data model is based on DOM (Document Object Model), therefore the retrieval of XML documents is executed basically using DOM tree traversal. We improve the search performance using Node ID which represents node's hierarchy information in an XML document. Assuming that DOW tree is a complete k-ary tree, we show that Node ID technique is superior to DOM tree traversal from the viewpoint of node fetch counts.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.15 no.4
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• pp.231-237
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• 2015

However XML languages can logically define the type of structure with their's own grammar, it is inadequate to use them as a tool for conceptual model that represents the semantics of data and the relationships between the data in the real world. In this paper, we propose conceptual modeling techniques, called CMXML, for modeling the XML schema at the conceptual level. For this purpose, we define the model formally, and provide a way to represent the model in a graphical and text form. We also propose an mapping methodology providing transformation from CMXML to XML schema to show the feasibility of the proposed model.