• 제목/요약/키워드: Metadata Schema

Search Result 152, Processing Time 0.031 seconds

A Metadata-oriented Data Warehouse Architecture - S Hospital Case - (메타데이터 기반 데이터 웨어하우스 아키텍쳐 - ㅅ병원 사례를 중심으로 -)

  • Kim, Tae-Hun;Kim, Jong-Ho;Lee, Hee-Seok
    • Asia pacific journal of information systems
    • /
    • v.10 no.3
    • /
    • pp.79-103
    • /
    • 2000
  • Data warehouse is an intelligent store of data. A metadata is critical for implementing data warehouse. Integrating data warehouse with its metadata helps create a more adaptive information system. This paper proposes a metadata-oriented data warehouse architecture that consists of seven components: legacy, extracting, operational data store, data warehouse, data mart, application, and metadata. A taxonomy for dataflow and metaflow is proposed for better understanding of the architecture. In addition, a metadata schema is built within the framework of the seven components. Lastly, the architecture with its metadata component is applied to a real-life data warehouse project for a large medical center in order to illustrate its practical usefulness.

  • PDF

Proposing XML based Integrated Griddata Metadata Accessing Method (XML기반의 그리드데이터 메타데이터 교환체계 구축 방안 제시)

  • Yi, Chae-Myoung;Kim, Kye-Hyun
    • 한국공간정보시스템학회:학술대회논문집
    • /
    • 2004.12a
    • /
    • pp.153-158
    • /
    • 2004
  • Nowadays, the demand of the output analyzed from the gridded data has been sharply increased as the remote sensing technologies and GIS related industry have been developed. Therefore, a metadata access system which fits the requirements of the users should be developed for better managing and utilizing gridded data. In this background, this study defined a common application schema through the analysis of the metadata built by numerous institutes based on the draft metadata standards proposed from the study which maily concentrated on establishing the standards of distributing metadata for the gridded data supported by ETRI at 2003. Also, XML based integrated system was developed to access metadata maintained by SaTReC as well as SIMC to facilitate more convenient data access for the grid data users. The results of the pilot system developed from this study can be expected to contribute to build an more efficient and enlarged integrated access system of the metadata for the gridded data.

  • PDF

Development of Integrated Metadata Accessing System for the Utilization of Griddata (그리드데이타의 활용을 위한 메타데이터 통합검색시스템의 개발)

  • 이재명;김계현;곽태식;박태옥
    • Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
    • /
    • 2004.11a
    • /
    • pp.197-202
    • /
    • 2004
  • Nowadays, the demand of the output analyzed from the gridded data has been sharply increased as the remote sensing technologies and GIS related industry have been developed. Therefore, a metadata access system which fits the requirements of the users should be developed for better managing and utilizing gridded data. In this background, this study defined a common application schema through the analysis of the metadata built by numerous institutes based on the draft metadata standards proposed from the study which maily concentrated on establishing the standards of distributing metadata for the gridded data supported by ETRI at 2003. Also, XML based integrated system was developed to access metadata maintained by SaTReC as well as SIMC to facilitate more convenient data access for the grid data users. The results of the pilot system developed from this study can be expected to contribute to build an more efficient and enlarged integrated access system of the metadata for the gridded data.

  • PDF

Change Detection and Management Scheme of OWL Documents (OWL 문서의 변경 탐지 및 관리 기법)

  • Kim, Youn-Hee;Kim, Jee-Hyun
    • Journal of Digital Contents Society
    • /
    • v.13 no.1
    • /
    • pp.43-52
    • /
    • 2012
  • For accurate search on information resources, it is needed to manage gradual changes in ontology efficiently. Recently, because ontology is often written using OWL, techniques that can manage changes in OWL documents are required. To meet these needs, in this paper, we classify changeable elements to detect changes in OWL ontology and propose a storage schema that can manage the changes according to the characteristics of each element. And we suggest the possibility of improving performance of query processing using views that provide information about classes or properties in each ontology version. The proposed storage schema stores changes in metadata associated with each ontology version. In addition, it can manage metadata that must be added or deleted through reasoning when ontology changes. So, the proposed storage schema can support queries about history of changes in ontology and provide accurate and valid metadata that is suitable for user-selected ontology version.

Design of a RDF Metadata System for the Searching of Application Programs (응용프로그램의 검색을 위한 RDF 메타데이터 시스템의 설계)

  • Yoo Weon-Hee;Kouh Hoon-Joon
    • The Journal of the Korea Contents Association
    • /
    • v.5 no.6
    • /
    • pp.1-9
    • /
    • 2005
  • As the amount of data on the web increase, it is difficult to search what we want exactly. Therefore, much researches are attempted to search web resources efficiently. So, W3C established the standard that give meanings to resources on the web using RDF metadata. The RDF metadata had been mainly described a document data on the web. But it is difficult to create automatically the metadata for application programs than the document data. This paper proposes a method to use RDF metadata to search application programs. Firstly, we define RDF data model that stores the information of the application programs and RDF schema that references the RDF data model. And we design a prototype system to search application programs. This system meets expectation, getting the application to fullfill the needs of user, and has the efficiency of the searching function.

  • PDF

Design and frnplernentation of a Query Processing Algorithm for Dtstributed Semistructlred Documents Retrieval with Metadata hterface (메타데이타 인터페이스를 이용한 분산된 반구조적 문서 검색을 위한 질의처리 알고리즘 설계 및 구현)

  • Choe Cuija;Nam Young-Kwang
    • Journal of KIISE:Software and Applications
    • /
    • v.32 no.6
    • /
    • pp.554-569
    • /
    • 2005
  • In the semistructured distributed documents, it is very difficult to formalize and implement the query processing system due to the lack of structure and rule of the data. In order to precisely retrieve and process the heterogeneous semistructured documents, it is required to handle multiple mappings such as 1:1, 1:W and W:1 on an element simultaneously and to generate the schema from the distributed documents. In this paper, we have proposed an query processing algorithm for querying and answering on the heterogeneous semistructured data or documents over distributed systems and implemented with a metadata interface. The algorithm for generating local queries from the global query consists of mapping between g1oba1 and local nodes, data transformation according to the mapping types, path substitution, and resolving the heterogeneity among nodes on a global input query with metadata information. The mapping, transformation, and path substitution algorithms between the global schema and the local schemas have been implemented the metadata interface called DBXMI (for Distributed Documents XML Metadata Interface). The nodes with the same node name and different mapping or meanings is resolved by automatically extracting node identification information from the local schema automatically. The system uses Quilt as its XML query language. An experiment testing is reported over 3 different OEM model semistructured restaurant documents. The prototype system is developed under Windows system with Java and JavaCC compiler.

A Study on Metadata Mapping for Semantic Interoperability (의미 호환을 위한 메타데이터 매핑 연구)

  • Ko, Young-Man;Seo, Tae-Sul;Lim, Tae-Hoon
    • Journal of the Korean Society for information Management
    • /
    • v.24 no.4
    • /
    • pp.223-238
    • /
    • 2007
  • This paper contains an analysis of the methods that have been used to achieve or improve interoperability among metadata and discuss the possibilities and limits of semantic interoperability among metadata using crosswalk. After that a semantic metadata mapping process which is able to maximize the interoperability among metadata is suggested. The methodology consists of four steps such as identifying metadata schema, finding common data element concepts(DECs), grouping attributes by the DECs, and mapping into a table. An experimental application of the process was performed onto two human resource information metadata standards developed in Korea.

Metadata and Meta-Information System for Hypermedia Documents

  • Woojong Suh;Lee, Heeseok
    • Proceedings of the Korean Operations and Management Science Society Conference
    • /
    • 1998.10a
    • /
    • pp.89-92
    • /
    • 1998
  • Recently, many organizations have attempted to construct hypermedia systems to expand their working areas to Internet-based virtual work places. For the effective management of the hypermedia application, it is important to develop a technique for managing hypermedia documents, hyperdocuments. This paper employs metadata as it has been conceived as a key approach in document management. Hence, this paper proposes a meta-information system based on metadata, HyDoMIS, for the purpose of hyperdocument manage-ment. This system contains a repository for hyper-documents, which is based on metadata schema and classification. HyDoMIS performs functions such as metadata management, searching and reporting.

  • PDF

DESIGN AND IMPLEMENTATION OF MULTIMEDIA MATADATA MANAGEMENT SYSTEM FOR HETEROGENOUS SOURCES

  • Park, Seong-Kyu;Lee, Yang-Koo;Chai, Duck-Jin;Kim, Hi-Seok;Ryu, Keun-Ho
    • Proceedings of the KSRS Conference
    • /
    • 2008.10a
    • /
    • pp.398-401
    • /
    • 2008
  • With the advance of internet and computer processing technique, users can easily access and use the multimedia contents involving the various pictures, videos and audios information. And users request more convenient and accurate multimedia services. In these environments, it is difficulties to integrate and manage metadata standards because there are various standards in multimedia applications according to types of services and data formats individually. In this paper, we design and implement the multimedia metadata management system for integrating from heterogeneous sources. In our system, we managed heterogeneous metadata by integrating to unified schema using mapping table. Through proposed system, users can search multimedia data easily without considering variety of application services.

  • PDF

Modeling of metadata for agricultural and livestock food product (농축산물 식품 메타데이터 모델링)

  • Cho, Hyeeun;Kim, Dae-young
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
    • /
    • 2016.10a
    • /
    • pp.475-478
    • /
    • 2016
  • This paper deals with how to operate the metadata for agricultural and livestock food product through the GS1 Source which is a GS1 standard metadata service. We defines GS1 standard identifiers for identifying food product and explain the guidelines for the methods how to document with GS1 standard schema and how to query the metadata in the storage of GS1 Source.

  • PDF