Metadata Registries (MDR)

1. Metadata Registries(MDR) 김민수

2. Contents • 정보 표준화의 문제 • 해결 방법 • ISO/IEC 11179 Metadata registries • Interoperability Metadata Registries

3. 대상 Object 항목명 Property 표현값 Representation 종류 지프 이름 코란도 도어수 4개 구동방식 오토 색 회색 가격 2,000만원 : : 정보 표준화의 문제 Metadata Registries

4. 항목명의 불일치 표현 값의 불일치 유형 종류 지프 지이프 명칭 이름 코란도 Korando 바퀴수 도어수 4개 4 변속방식 구동방식 오토 자동 컬러 색 회색 Grey 소매가격 가격 2,000만원 20,00천원 도매가격 1,800만원 18,00천원 명칭 표기의 차이 값 표기의 차이 다른 항목 선택 단위의 차이 명칭 세분화 정보 표준화의 문제 • 정보 유통의 걸림돌: metadata의 불일치 Metadata Registries

5. 정보 표준화의 문제 • 다양한 metadata 표준의 혼재 • MARC(Machine-Readable Cataloging) • TEI(Text Encoding Initiative) • DC(Dublin Core) • ONIX(ONine Information eXchange) • CERIF(Common European Research Information Format) • ……… • 하나의 metadata 형식으로 모든 자원을 기술할 수 없으며 , 이미 다양한 형식의 metadata 표준들이 개발되어 있고, 앞으로 더 광범위한 분야의 metadata가 필요하게 됨 Metadata Registries

6. 해결 방법 • metadata 통합 vs 다양한 metadata 인정 • 해결 방법 사례 • Crosswalk • Warwick 구조 • Metadata Registry Metadata Registries

7. 해결 방법 • 매핑 및 참조 테이블(Crosswalk) • USMARC과 DC,TEI, EAD의 매핑 테이블, DC와 다른 metadata 형식과의 참조 테이블, 공통 metadata 기술집합과의 매핑 • 문제점 • 의미상의 일치를 위해서는 전문가의 지적 능력이 필요 • metadata의 잦은 수정으로 인한 유지관리의 부담 • 정확한 1:1 대응이 되지 않는 부분 Metadata Registries

8. 스키마 1 DC RDF 의미 Metadata Initiatives 스키마 1 MARC XML namespace 구문 XML 스키마 1 관리메타데이터 구조 RDF 모델 해결 방법 • Warwick 구조 • 공존하는 다양한 metadata 형식의 interoperability 지원 • W3C에서 개념적인 차원의 통합 구조인 RDF를 개발, 구현 Metadata Registries

9. 해결 방법 • Metadata Registry(MDR) • ISO/IEC JTC1/SC32에서 표준화 • 환경분야, 건강관리 분야, ITS 등의 특정 분야의 정보 공유에 적합 Metadata Registries

10. Metadata Registries • metadata • data that defines and describes other data • Metadata Registry(MDR) • an information system for registering metadata • Metadata is also data, so metadata may be stored in a database. A database of metadata that supports the functionality of registration is a Metadata Registry. Metadata Registries

11. ISO/IEC 11179 for the Specification and Standardization of Data Elements for Data Elements • 11179-1, Framework • 11179-2, Classification scheme Basic attributes of Data Elements • 11179-3, Registry metamodel • 11179-4, Formulation of data definitions • 11179-5, Naming and identification principles • 11179-6, Registration for Data Elements of Data Elements Metadata Registries

12. Registration Authority Executive Committee Registrar Control Committee Responsible Organization Stewards Read-only Users MetadataRegistry Submitting Organization Submitters ISO/IEC 11179-6 Metadata Registries

13. RegistrationAuthority Submitting Organization ResponsibleOrganization Process applications Assign identifiers Maintain a Registry Assign appropriate Registration Status Submit Item for registration Provide supplemental information SpecifyItem Arbitrate: Semantics Name Domain Reconcile Clarify Advise Notify Resolveconflict Consult Notify Submitters of its decisions ISO/IEC 11179-6 Metadata Registries

14. Data Element Concept Conceptual Domain Data Element Value Domain ISO/IEC 11179-1 The Mind’s Perceived View The Presentational View Metadata Registries

15. ISO/IEC 11179-1 DATA ELEMENT CONCEPT DATA ELEMENT (1:N) (1:N) Object Class Object Class Object Class (1:N) (1:1) (1:1) Property Property (1:1) Representation Metadata Registries

16. ISO/IEC 11179-1 (1:N) (1:N) CONCEPTUAL DOMAIN (1:N) VALUE DOMAIN CONCEPTUAL DOMAIN VALUE DOMAIN Non-exclusive sub-types Non-exclusive sub-types ENUMERATED CONCEPTUAL DOMAIN NON-ENUMERATED CONCEPTUAL DOMAIN ENUMERATED VALUE DOMAIN NON-ENUMERATED VALUE DOMAIN CONCEPTUAL DOMAIN VALUE MEANING PERMISSIBLE VALUES (1:N) (1:1) (N:1) VALUE DOMAIN Metadata Registries

17. ISO/IEC 11179-1 Metadata Registries

18. Administration and Identification Naming and Definition ADMINISTERED ITEM Classification ISO/IEC 11179-3 Metadata Registries

19. Administration and Identification ISO/IEC 11179-3 • Who registered the item • What is the identifier for the item • Who submitted the item • Who is responsible for the item • What reference material supports the item • When was the item created/changed • When is the item effective • What comments, issues, and notes exist Metadata Registries

20. registering Registration_Authority 1..1 1..1 registration_authority_identifier [1..1] : Registration_Authority_Identifier documentation_language_identifier [1..*] : Language_Identification 1..1 1..1 containing registration_authority_registrar Organization reference_organization organization_name [1..1] : String organization_mail_address [0..1] : String 1..n 1..n included_in providing 1..1 1..1 1..1 1..1 provided_by 1..n 1..n +submitting administering 0..n 0..n Registrar Reference_Document registration registrar_identifier [1..1] : String reference_document_identifier [1..1] : String registrar_contact [1..1] : Contact reference_document_type_description [0..1] : String reference_document_language_identifier [0..*] : Language_Identification reference_document_title [0..1] : String 0..n 0..n stewardship submission describing Stewardship Submission stewardship_contact [1..1] : Contact submission_contact [1..1] : Contact administered_by +submited_by 0..n 0..n 0..n 0..n reference Administration and Identification Administered_Item 0..n 0..n 0..n 0..n registered_by administered_item_administration_record [1..1] : Administration_Record described_by ISO/IEC 11179-3 Metadata Registries

21. Registration_Authority registration_authority_identifier [1..1] : 1 Organization documentation_language_identifier [1..*] : 1 organization_name [1..1] : U.S. EPA organization_mail_address [0..1] : 1200 Pennsylvania Ave., N.W. City: Washington State Province: DC Zip Code: 20460 Country: USA Registrar registrar_identifier [1..1] : 1 registrar_contact [1..1] : Contact Name: Larry Fitzwater Mail Address: 1200 Pennsylvania Ave., N.W. City: Washington State Province: DC Zip Code: 20460 Country: USA E-mail Address: fitzwater.larry@epa.gov Administration and Identification ISO/IEC 11179-3 Metadata Registries

22. Naming and Definition ISO/IEC 11179-3 • Contexts(subject areas) • Multiple languages within a context • Multiple designations(names) within a language • Multiple definitions within a language Metadata Registries

23. Classification ISO/IEC 11179-3 • Classification schemes • Items within a classification scheme • Relationships of those items Metadata Registries

24. Data Element Value Domain Data Element Concept Conceptual Domain Classification Scheme Context Object Class Property Representation Class ISO/IEC 11179-3 Types of Administered item Metadata Registries

25. ISO 11179Registries OASIS/ebXMLRegistries UDDIRegistries Common Content Common Content Common Content Cooperation/ Interoperation CASE Tool Repositories OntologicalRegistries Common Content Common Content Database Catalogs Software Component Registries Dublin Core Registries Common Content Common Content Common Content Registry types Metadata Registries

26. Registry types • OASIS/ebXML (Organization for the Advancement of Structured Information Standards/electronic business XML) XML Registries –XML Artifacts • ISO 11179 Metadata Registries –Data semantics • UDDI (Universal Description, Discovery, and Integration) Registries –Web-based business services • Database System Registries (System Catalogs/Data Dictionaries/ Repositories) –Schema, integrity & operational information • Case Tool Registries (Encyclopedias/Repositories) –Data model and application program logic • Ontological Registries –Concept structures • Software Component Registries –Software components • Dublin Core Registries– Descriptive records for information resources Metadata Registries

27. UN/CEFACT ISO TC 215 OASIS Reg/Rep HealthInformatics XML Registry W3C Open Forum on Metadata Registries XML Intelligent Transportation Systems UDDI UDDI Terminology Metamodel Framework ISO/IEC11179MDR SQLCatalog ISO TC 37 ISO TC 204 Metadata Framework for Business Objects Commerce OMG ISO/IEC JTC1 SC32 TC154 … Interoperation Metadata Registries