• The KIPS Transactions:PartD
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• v.8D no.5
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• pp.495-506
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• 2001

XML makes it possible for data to be exchanged regradless of the data model in which it is represented or the platform on which it is stored, serving as a standard for data exchange format on the internet. Especially, it is natural to send XML data without DTD on the internet when XML is data-centric. Therefore it is needed to extract relational schema to store XML data efficiently, to optimize queries, and to publish data which have been stored in the relational database in the XML format. In this paper, we proposed a method to generate relational database in the XML documents without DTD and store XML data using upper/lower bound schema extraction technique for semistructured data. In extracting a lower bound schema, we especially show an efficient technique for creating relational schema by using simulation with is more advanced than the datalog method.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.11 no.4
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• pp.722-727
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• 2007

We propose a prescription transmission system based on XML in his paper, and it is not to attach a former signature to only a XML document for encoding of XML/EDI, and it is construction, one with the prescription transmission system which is safer with what use a way to attach a digital signature to DTD. I defined sub element to manage information prescription DTD defined prescription information, patient information, medical care organ information, prescription details information, compounding of medicines details information element according to for each a component of a prescription I went along, and to have looked up, and to have obeyed information transmission at he low rank. I read a DTD file for safe prescription transmission, and I do element or property, the entity which I do it, and is extracted here, and Pasing is saved in a table while being a field. If Pasing is finished, I read and lift a hash table and carry out message a digest. I compose it with an early private key and create a digital signature.

• 제어로봇시스템학회:학술대회논문집
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• 2005.06a
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• pp.1482-1485
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• 2005

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, inlining two dimensional DTD graph into flat feature values. 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.

• 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.

• Journal of the Korea Society of Computer and Information
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• v.6 no.1
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• pp.38-44
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• 2001

Nowadays, the study on XML as a standard method of exchange of information is active as Internet technology develops. This thesis designs and implements XML documents storage system using uniSQL/X in object-relational database. The system takes advantage of the merits of object-oriented databases, so that the structural information of XML documents can be effectively represented. The system uses split-storage method to allow frequent modifications of XML documents and suggests DTD-independent model so that it can store XML documents without DTD. And retrieval speed is improved by solving the issue of data duplication.

• Proceedings of the Korea Multimedia Society Conference
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• 2000.04a
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• pp.374-377
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• 2000

본 논문에서는 기존의 항만물류 EDI가 가진 문제점을 해결하기 위한 방안으로 제시된 XML/EDI 에 대해 살펴보고 항만 물류에 XML/EDI를 적용하기 위해 기존의 EDI 메시지를 XML Schema 로 변환하는 기법을 소개한다. XML 문서의 논리적 구조를 표현하는 방법은 크게 DTD(Document Type Definition) 와 XML Schema 의두 가지 방식이 있으며,k XML Schema 는 기존의 DTD 에 비해 다양한 데이터 타입의 지원, namespace 지원, open-ended 데이터 모델의 지원등 여러 장점이 있기 때문에 항만 EDI 메시지를 XML Schema 로 변환하면 DTD 로 변환하는 것에 비해 높은 표현력과 다양한 부가적인 처리를 지원할 수 있다.

• Proceedings of the Korea Multimedia Society Conference
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• 2004.05a
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• pp.455-458
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• 2004

본 연구는 다양한 형식을 가지는 XML 문서의 효율적인 정보검색을 위한 다음과 같은 자동화 모듈들을 개발하였다 구현된 모듈은 XML 문서를 획득하는 문서추출 모듈, 온톨로지를 이용한 포괄적 DTD 생성 모듈 생성된 포괄적 DTD와 XML 파서를 이용하여 정보검색 대상 XML 문서를 사전에 선별하는 문서여과 모듈, XML 질의를 확장하는 질의확장 모듈, JDOM의 XPath를 이용한 질의엔진 모듈로 구성된다. 이와 같이 구현한 모듈들을 샘플 XML 문서에 적용하여 XML 문서추출, DTD 생성, 문서여과, 질의확장, 질의엔진의 효과를 실험하였다.

• Journal of The Korean Association of Information Education
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• v.6 no.1
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• pp.30-41
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• 2002

The purpose of this thesis is to develop a standard for drawing up DTD files and making them about information of students easily. By projecting DTD and embodying a file generator which can generate XML files about information of students, we can have good effects as follows. We can share information about the management of students to correspond to big changes of circumstance in education of school caused by the advent of computers and webs. Teachers can lesson their work and have a chance to devote themselves to teaching. DTD for making XML files about information of students was designed on the basis of the spirit of the 7th school curriculum. We can give and receive same kinds of information about students from school to school.

• Journal of Information Technology Applications and Management
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• v.9 no.1
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• pp.71-84
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• 2002

As the application area of XML extends to the database from simple contents, the technology for the storage and management of XML also grows with the XML. One of the main issues is how to efficiently manage the XML by using the previous DBMS. Many studies have been performed for the efficient management based on the XML application and database interface. However, the XML data is based on the object and has the hierarchical structure. Accorkingly, a modeling plan needs to store the XML data on the variety type of database. In this paper, for easier connection between XML application and database system, we have designed components for the transformation from XML DTD to ORDB schema. The method of the design for the transformation from XML DTD to ORDB schema is chosen the method of CBD.

• The KIPS Transactions:PartD
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• v.9D no.2
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• pp.195-202
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• 2002

Information exchange on XML such as B2B electronic commerce is spreading. Therefore the systematic and stable management mechanism for storing the exchanged information is needed. For this goal there are many research activities for connection between XML application and relational database. But because XML data have hierarchical structures and relational database can store only flat-structured data, we need to store XML data in object-oriented database that support hierarchical structure. Accordingly the modeling methodology for storing XML data in object-oriented database is needed. In this parer, the transforming methods based on object model from XML DTD to object-oriented database schema is proposed. For this, we first introduce mapping methods that map XML DTD to object model and then we propose soem methods that transform from the object model to object-oriented database schema.