• Journal of Internet Computing and Services
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• v.3 no.4
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• pp.37-50
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• 2002

XML document repositary system(XDRS) should be able to manage vertical and horizontal versions of documents to store, update and manage XML documents without loss of information, However, most of existing XDRSs do not support a versioning method Although a few systems support versioning method. they only manage vertical versions of XML documents, While the vertical versioning preserves the update history of documents. the horizontal versioning branches a document to many other versions of documents so that users can easily create new documents from the original version and edit them to have different meanings. In this paper, we propose a new version numbering scheme to support both vertical and horizontal versioning efficiently. We also design a schema that supports versioning and preserves the paradigm of structure information.

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

• Proceedings of the Korea Database Society Conference
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• 1997.10a
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• pp.483-503
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• 1997

One important question that arises when dealing with temporal databases in context of object-oriented systems is the method that associates time with attributes relationship semantics. Results of previous work about attribute versioning, particularity extending flat(First Normal Form: FNF) or nested(Non-First Normal Form: NFNF) relational models. are not applicable to temporal object-oriented databases. This is because object-oriented models provide more powerful constructs than traditional models for structuring complex objects. Therefore, this paper presents an formal approach for incorporating temporal extension to object-oriented databases. Our goal in this paper is to study temporal object-oriented database representation according to generalization, aggregation and association among objects. We define tile concepts of attribute versioning in temporal object-oriented model, and we concentrate on the representation of temporal relationship among objects. Another contribution of this paper is to specify time constraints on relationship semantics and analyze our model based on representation criteria. By means of formalizing tile temporal object oriented model, this paper can not only provide tile robust operating functions that design algebraic operators, but also entrance the reuse of modules.

• The KIPS Transactions:PartC
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• v.12C no.7 s.103
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• pp.1057-1066
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• 2005

WebDAV(Web-based Distributed Authoring and Versioning), a protocol which supports web-based distributed authoring and versioning, provides a standard infrastructure for asynchronous collaboration on various contents through the Internet. A WebDAV property management is a function to set and manage the main information of the resources as properties, and a user property, one kind of the WebDAV properties, has the ability to be freely defined by users. This free definition of user property makes it very useful to develop web-based applications like a collaboration system based on WebDAV However, with an existing WebDAV property management scheme, there is a limit to develop various applications. This paper describes a DavUP(WebDAV User property design Protocol) protocol which extended the original WebDAV and its uti-lization which efficiently supports management of WebDAV user properties. DavUP needs the definition of the collection structure and type definition properties for an application. To do this, we added a new header md appropriated WebDAV method functions to the WebDAV protocol. To show the usefulness of DavUP protocols, we extended our DAVinci WebDAV server to support DavUP Protocols and experimentally implemented a general Open Workspace, which provides effective functions to share and exchange open data among general users, on the DAVinci.

• The Journal of Information Technology and Database
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• v.7 no.1
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• pp.27-39
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• 2000

In this paper, we design and implement a XML management system based on OODBMS that supports structured information retrieval of XML documents. We also propose an object oriented modeling to store and fetch XML documents, to manage image data, and to support versioning for the XML document management system(XMS). The XMS consists of a repository manager that maintains the interfaces for external application programs, a XML instance storage manager that stores XML documents in the database, a XML instance manager that fetches XML documents stored in the database, a XML index manager that creates index for the structure information and the contents of documents, and a query processor that processes various queries.

• Proceedings of the Korean Information Science Society Conference
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• 2004.10c
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• pp.562-564
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• 2004

WebDAV(Web-based Distributed Authoring and Versioning)는 웹 통신 프로토콜로서 인터넷을 통하여 다양한 콘텐츠의 비동기적인 협업 저작을 지원한다. 따라서 WebDAV를 지원하는 다양한 종류의 서버들은 상호간의 협업 작업이 가능하다. 특히 WebDAV의 접근 제어 프로토콜은 특정 자원에 대한 접근 제어 권한을 정의하기 위하여 표준 Privilege들을 정의하고 있다. 본 논문에서는 웹기반 협업시스템의 핵심 기능인 팀 작업장과 공개 작업장의 자원에 접근할 때, 사용자의 권한과 작업장의 특성 그리고 자원의 특징에 따라 접근 제어 관리를 할 수 있도록 접근 제어 기법을 설계하였다. 특히 공개 작업장은 파일 올리기만 가능한 작업장, 내려받기만 가능한 작업장, 올리기/내려받기 가능한 작업장과 같이 성격이 다양하다. 이를 지원하기 위하여 작업장내 파일에 대한 접근 권한을 구체적으로 설계함으로써 협업작업을 체계적이고 안정적으로 지원할 수 있다.

• Proceedings of the Korean Information Science Society Conference
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• 2004.04a
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• pp.814-816
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• 2004

WebDAV(Web-based Distributed Authoring and Versioning)는 웹상의 공동 저작활동을 지원하기 위한 IETF 표준으로서, 멀리 떨어져 있는 사용자들 간에 인터넷상에서 파일을 공동 편집하고 관리할 수 있도록 해주는 일련의 HTTP 확장이다. 이것은 웹 상에서 가상의 작업공간을 구성함으로써, 원격 그룹들 간에 새로운 방식으로 공동작업을 가능하게 한다. WebDAV 클라이언트는 이러한 명세를 지원하는 WebDAV 서버와 HTTP 요청을 통하여 서버 자원에 대한 변경 및 수정 작업을 수행하게 된다. 따라서 클라이언트는 뛰어난 동시성 제어와 속성 관리를 통하여 자원의 저작과 버전관리의 기능을 제공하는 것이 바람직하다. 본 논문에서는 기존의 몇 가지 WebDAV 클라이언트를 분석하여 리눅스 기반의 오픈소스 WebDAV 클라이언트를 설계하였다. 이것은 사용자의 수작업에 의한 문서 저작 절차를 단순화하고 저작 응용프로그램의 모니터링을 통하여 문서 변경에 대한 능동적인 서버 갱신을 지원하도록 설계하였다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2023.05a
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• pp.301-302
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• 2023

A service platform was designed to provide smart aids to navigation services with the standardized format and to manage user authentication and access rights. To meet the requirements of the service platform, Keycloak, an open source OIDC implementation, was used for user authentication, and the S-100 feature catalogue versioning method was used for service management. To standardize internal service data to S-100, we designed a minimum standard format for mapping internal service data to S-100 data using JSON Schema.

• The KIPS Transactions:PartD
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• v.8D no.1
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• pp.54-61
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• 2001

Software architectures can be restructured by modification and replacement during design processes, and appropriate software architectures for developments can be more than one. Therefore, developers are required to specify efficiently the modification elements of architectures, and manage different versions of an architecture designed for various aspects. In this paper, we propose a mechanism that can restructure legacy architecture and a new software architecture designed with reuse of it in integrated form, and define the specification elements and structure of the proposed architecture restructuring specification. It provides the method that can reference and reuse architectures designed with various aspects of developers in architecture design processes.

• Journal of Internet Computing and Services
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• v.2 no.2
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• pp.71-93
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• 2001

Commonly to design a database system. a conceptual database has to be designed and then it is transformed into a logical database schema prior to building a target database system. This paper proposes a method which transforms a Temporal Entity-Relationship Model(TERM) into a Temporal Object-Oriented Model(TOOM) to build an efficient database schema. I formalize the time concept in view of object versioning and specify the constraints required during transformation procedure. The proposed transformation method contributes to getting the logical temporal data from the conceptual temporal events Without any loss of semantics, Compared to other approaches of supporting various properties, this approach is more general and efficient because it is the semantically seamless transformation method by using the orthogonality of types of objects, semantics of relationships and constraints over roles.