• Journal of KIISE:Computing Practices and Letters
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• v.16 no.3
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• pp.324-330
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• 2010

XML schema is widely used as an effective tool for organizing and validating XML data. Although W3C released XQuery and XQuery Update Facility as the standard methods for searching and updating XML data, there is no consideration about providing facilities for updating XML schema itself until now. So users can only update an XML schema file directly by using editors. However, the direct update has several problems: It cannot prevent user's illegal update; it is hard to apply to the XML schemas stored in databases, needs much time to analyze schema, and is likely to make syntactic errors. In this paper, we propose an XML schema update facility, which enables creation, deletion and modification of XML schema by using commands.

• The KIPS Transactions:PartD
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• v.11D no.5
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• pp.1021-1030
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• 2004

When any data-centric XML documents are stored and managed in RDBMS, schema extracting from XML Schema is an imminent problem. Furthermore, when they are stored in partitioned way on created table, lots of null values will be produced and/or be increased cost for join, so we need a solution to solve these problems. This paper proposes a Schema Hybrid Inlining technique to generate relational schema of XML documents. The suggested technique creates a relational schema based on the XML Schema graph. Also, the technique expands the legacy Inlining method by manual and heuristic processing table generation method of cardinality and in-degree. Then, an ancestor node, terminal node, and creating a new table on the derived relation in this technique. DTD-dependent storage method uses partitioned storing and relation path element information reformed structured-searching method to reduce joining operation cost that is a weak point of it.

• Education of Primary School Mathematics
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• v.15 no.3
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• pp.201-218
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• 2012

In this study, the following topics were investigated targeting elementary school students: Schema formed through precise notion of cognitive and the connection of the concepts when studying common divisor, common multiple, and the lowest common multiple, configuration ability and problem solving of the students when learning using a modified schema, how the schema of the student to advance to a higher level, and how the deformation of the schema is carried out student's configuration of concept and problem solving ability. As a result, it was found out that cognition about precise concept, schema and the modified schema are important factors when a primary concept was developed into a secondary concept, and play important roles when the connection and the formation of the modified schema created by cognition about the precise primary concept rather than by the formation of the secondary concept (formation of the secondary schema) created by the connection between the primary concept.

• Journal of the Korean Society for information Management
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• v.17 no.1
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• pp.21-47
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• 2000

Keeping the semantic interoperability between different formats is very important for reuseing and consistently processing metadata. This article is to design common schema and KORMARC schema based on RDF schema. For this, common elements are made by comparison of Dublin Core elements and KORMARC fields. The schema of these elements is designed for construction of semantic interoperability, basing RDF schema specification and syntax specification. Eventually, the semantic interoperability between a number of metadata formats can be constructed by matching the common elements to each attribute of format. KORMARC schema is designed by the application of common schema.

• Korean Journal of Child Studies
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• v.13 no.2
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• pp.65-81
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• 1992

The purpose of this study was to investigate children's conceptions about gender and the relation between gender conceptions and preference for gender related tasks. 130 children were interviewed about gender and gender related tasks. Data were analyzed with the component model of gender schema. Results indicated that children's gender schema in the attitudes domain was significantly different with age in all components but not different with sex. The gender schema in the knowledge domain was significantly different with age in within component and between component links, and with sex in the gender label-component and within component links. The difference between the gender inhibitory score and gender facilitative score was significantly different with age, sex, and children's gender schema. The findings that gender schema influenced the children's preferences for gender related tasks suggests a theoretical rationale of gender schema theory.

• Proceedings of the Korea Information Processing Society Conference
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• 2005.05a
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• pp.7-10
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• 2005

본 논문에서는 관계형 데이터베이스를 이용하여 XML Schema 문서를 저장 및 갱신 시 유효성이 유지되는 저장 모델을 설계하였다. 기존의 XML Schema 저장 모델은 갱신 시 유효성 검증을 위해 XML Schema 를 파일로 추출하여 변경한 후 XML Parser 를 이용하는 복잡한 과정을 필요로 한다. 이 논문에서 설계한 모델은 슈퍼타입 서브타입을 이용한 모델링과 관계형 데이터베이스에서 제공 하는 참조 키, NOT NULL, Default, Check(Rule), Trigger 등의 제약 조건을 사용하므로 다른 응용 프로그램의 의존 없이 저장 및 갱신 데이터의 유효성을 간단하게 검증할 수 있다. 그러므로 이 저장 모델을 이용하면 XML Schema 문서가 데이터베이스에 저장이 되어 있는 그 자체로 유효한 스키 마임을 보장할 수 있어 저장 및 갱신의 효율을 높일 수 있는 장점이 있다. 본 논문에서 설계한 저장 모델은 상용 관계데이터베이스인 SQL 서버 2000 에 적용하여 테이블과 제약조건을 설정한 후 데이터 갱신과정을 실험하였으며, 실험결과 XML Schema의 작성규칙에 위배되는 변경 시도는 설정한 제약조건에 의해 사전 방지되어 데이터의 유효성이 유지됨을 확인하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2005.05a
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• pp.23-26
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• 2005

XML 문서의 구조를 정의하는 XML Schema 는 문법이 복잡하며 설계자에 따라 표현방법이 달라질 수 있고 잘못된 설계는 시스템의 자원을 낭비할 수 있다. 특히 한정된 시간과 비용으로 진행되는 프로젝트에서 잘못된 XML Schema 설계는 프로젝트의 지연 및 비용 초과의 주된 원인이 된다. 따라서 본 논문에서는 XML 로 작성된 데이터 중심의 전자문서 전송 시 필요한 XML Schema 를 표준화된 방식으로 생성하는 변환정보파일 모델을 설계하였다. 그리고 설계된 변환정보파일모델에 정의된 메타 데이터를 이용하여 객체지향 개념을 도입한 XML Schema 를 자동 생성하는 시스템을 설계, 구현하여 표준화된 XML Schema 를 생성하였다.

• International Journal of Fuzzy Logic and Intelligent Systems
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• v.3 no.1
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• pp.32-36
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• 2003

An equivalent schema matching among several different source schemas is very important for information integration or mining on the XML based World Wide Web. Finding most similar source schema corresponding mediated schema is a major bottleneck because of the arbitrary nesting property and hierarchical structures of XML DTD schemas. It is complex and both very labor intensive and error prune job. In this paper, we present the first complex matching of XML schema, i.e. XML DTD. The proposed method captures not only schematic information but also integrity constraints information of DTD to match different structured DTD. We show the integrity constraints based hierarchical schema matching is more semantic than the schema matching only to use schematic information and stored data.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2004.05b
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• pp.354-357
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• 2004

Data warehouse is subject-oriented, integrated, non-volatiled data, and it used for OLAP(On-Line Analytical Processing) the extraction of information from making decision processing. In the present, lots of study have been devoted to multidimensional modeling between OLAP operator and star schema. In this paper, the design of using the snowflake schema for object-oriented conceptual relation is more extended than using drill-across operator. The object-oriented relation schema which was not applicable has been improved through the design.

• Proceedings of the Korea Multimedia Society Conference
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• 2003.11b
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• pp.984-989
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• 2003

최근 인터넷에서 문서 포맷의 기준으로 XML이 각광을 받고 있으며 XML schema를 통하여 DTD에서는 할 수 없었던 부분을 할 수 있게 되었다. 또한 e-카탈로그에서 XML 문서의 사용이 급증하면서 XML 문서의 설계가 점차 복잡해지고 XML schema 설계가 DTD보다 한층 더 복잡하게 되었기 때문에 XML schema 모델링이 중요한 문제로 대두 되었다. 이에 본 논문에서는 복잡한 XML 문서를 체계적이고 구조화하기 위하여 XML 문서를 UML로 설계하고 UML 모델링 정보를 변질과 누락 없이 추출하기 위하여 REI를 이용하여 UML 모델링 정보를 추출하여 XML로 변환하였다.