Metadata Registries (MDR) 김민수

Metadata Registries2 Contents  정보 표준화의 문제  해결 방법  ISO/IEC Metadata registries  Interoperability

Metadata Registries3 정보 표준화의 문제 종류 이름 도어수 가격 구동방식 색 : 지프 코란도 4개4개 2,000 만원 오토 회색 : 대상 Object 항목명 Property 표현값 Representation

Metadata Registries4 정보 표준화의 문제  정보 유통의 걸림돌 : metadata 의 불일치 종류 이름 도어수 가격 구동방식 색 지프 코란도 4개4개 2,000 만원 오토 회색 항목명의 불일치표현 값의 불일치 유형 명칭 바퀴수 소매가격 변속방식 컬러 지이프 Korando 4 20,00 천원 자동 Grey 도매가격 1,800 만원 18,00 천원 명칭 표기의 차이 다른 항목 선택 명칭 세분화 값 표기의 차이 단위의 차이

Metadata Registries5  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 개 발되어 있고, 앞으로 더 광범위한 분야의 metadata 가 필요하게 됨 정보 표준화의 문제

Metadata Registries6 해결 방법  metadata 통합 vs 다양한 metadata 인정  해결 방법 사례  Crosswalk  Warwick 구조  Metadata Registry

Metadata Registries7 해결 방법  매핑 및 참조 테이블 (Crosswalk)  USMARC 과 DC,TEI, EAD 의 매핑 테이블, DC 와 다른 metadata 형식과의 참조 테이블, 공통 metadata 기술집합과의 매핑  문제점 의미상의 일치를 위해서는 전문가의 지적 능력 이 필요 metadata 의 잦은 수정으로 인한 유지관리의 부담 정확한 1:1 대응이 되지 않는 부분

Metadata Registries8 해결 방법  Warwick 구조  공존하는 다양한 metadata 형식의 interoperability 지원  W3C 에서 개념적인 차원의 통합 구조인 RDF 를 개발, 구현 RDF 의미 Metadata Initiatives 구문 XML 구조 RDF 모델 스키마 1 DC 스키마 1 MARC 스키마 1 관리메타데이터 XML namespace

Metadata Registries9 해결 방법  Metadata Registry(MDR)  ISO/IEC JTC1/SC32 에서 표준화  환경분야, 건강관리 분야, ITS 등의 특정 분야 의 정보 공유에 적합

Metadata Registries10 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 Registries11 ISO/IEC  , Classification scheme  , Framework  , Registration  , Formulation of data definitions  , Naming and identification principles  , Registry metamodel for the Specification and Standardization of Data Elements for Data Elements Basic attributes of Data Elements for Data Elements of Data Elements

Metadata Registries12 ISO/IEC Control Committee Registration Authority Executive Committee Read-only Users Submitters Submitting Organization Stewards Responsible Organization Registrar Metadata Registry

Metadata Registries13 ISO/IEC Submitting Organization Responsible Organization Registration Authority Specify Item Submit Item for registration Provide supplemental information Resolve conflict Process applications Assign identifiers Maintain a Registry Assign appropriate Registration Status Notify Submitters of its decisions Consult Reconcile Clarify Arbitrate: Semantics Name Domain Advise Notify

Metadata Registries14 ISO/IEC The Mind’s Perceived View Data Element Data Element Concept Conceptual Domain Value Domain The Presentational View

Metadata Registries15 ISO/IEC DATA ELEMENT CONCEPTDATA ELEMENT Property Representation (1:1) (1:N) Object Class (1:N) Object Class (1:N) Object Class

Metadata Registries16 ISO/IEC CONCEPTUAL DOMAIN (1:N) VALUE DOMAIN ENUMERATED VALUE DOMAIN NON-ENUMERATED VALUE DOMAIN VALUE DOMAIN CONCEPTUAL DOMAIN VALUE MEANING PERMISSIBLE VALUES VALUE DOMAIN (1:N)(1:1)(N:1) Non-exclusive sub-types CONCEPTUAL DOMAIN ENUMERATED CONCEPTUAL DOMAIN NON-ENUMERATED CONCEPTUAL DOMAIN Non-exclusive sub-types

Metadata Registries17 ISO/IEC

Metadata Registries18 ISO/IEC Naming and Definition Classification ADMINISTERED ITEM Administration and Identification

Metadata Registries19 ISO/IEC  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 Administration and Identification

Metadata Registries20 ISO/IEC Administration and Identification Stewardship stewardship_contact [1..1] : Contact Submission submission_contact [1..1] : Contact Registrar registrar_identifier [1..1] : String registrar_contact [1..1] : Contact Registration_Authority registration_authority_identifier [1..1] : Registration_Authority_Identifier documentation_language_identifier [1..*] : Language_Identification n containing 1..1 included_in 1..n registration_authority_registrar Reference_Document reference_document_identifier [1..1] : String reference_document_type_description [0..1] : String reference_document_language_identifier [0..*] : Language_Identification reference_document_title [0..1] : String Administered_Item administered_item_administration_record [1..1] : Administration_Record n registering 1..1 registered_by 0..n registration 0..n described_by 0..n describing 0..n reference Organization organization_name [1..1] : String organization_mail_address [0..1] : String 1..n 0..n providing 1..n provided_by 0..n reference_organization 0..n submited_by 0..n +submitting 1..1 submission 0..n 1..1 administered_by 0..n administering 1..1 stewardship

Metadata Registries21 ISO/IEC Registration_Authority registration_authority_identifier [1..1] : 1 documentation_language_identifier [1..*] : 1 Organization organization_name [1..1] : U.S. EPA organization_mail_address [0..1] : 1200 Pennsylvania Ave., N.W. City: Washington State Province: DC Zip Code: 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: Country: USA Address: Administration and Identification

Metadata Registries22 ISO/IEC  Contexts(subject areas)  Multiple languages within a context  Multiple designations(names) within a language  Multiple definitions within a language Naming and Definition

Metadata Registries23 ISO/IEC  Classification schemes  Items within a classification scheme  Relationships of those items Classification

Metadata Registries24 ISO/IEC Data Element Concept Value Domain Conceptual Domain Classification Scheme Context Object Class Property Representation Class Data Element  Types of Administered item

Metadata Registries25 Registry types Common Content OASIS/ebXML Registries Common Content ISO Registries Common Content Ontological Registries Common Content Database Catalogs Common Content CASE Tool Repositories Common Content UDDI Registries Cooperation/ Interoperation Software Component Registries Common Content Dublin Core Registries Common Content

Metadata Registries26 Registry types  OASIS/ebXML (Organization for the Advancement of Structured Informatio n Standards/electronic business XML) XML Registries – XML Artifacts  ISO Metadata Registries – Data semantics  UDDI (Universal Description, Discovery, and Integration) Registries – Web- based business services  Database System Registries (System Catalogs/Data Dictionaries/ Repositorie s) – Schema, integrity & operational information  Case Tool Registries (Encyclopedias/Repositories) – Data model and applicat ion program logic  Ontological Registries – Concept structures  Software Component Registries – Software components  Dublin Core Registries – Descriptive records for information resources

Metadata Registries27 Interoperation ISO/IEC JTC1 SC32 UN/CEFACT OMG ISO TC 37 ISO TC 204 Open Forum on Metadata Registries OASIS Reg/Rep Metadata Framework for Business Objects Intelligent Transportation Systems ISO/IEC MDR Metamodel Framework W3C XML Registry UDDI TC154 Commerce XML Terminology UDDI SQL Catalog … ISO TC 215 Health Informatics