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Descriptive metadata

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Alphabet Soup: Choosing Among DC, QDC, MARC, MARCXML, and MODSDescriptive metadataSome data structure standardsHow do I pick one?Dublin Core (DC)DCMI missionDC PrinciplesDC encodingsContent/value standards for DCSome limitations of DCGood times to use DCSlide 12Qualified Dublin Core (QDC)Types of DC qualifiersDC qualifier statusLimitations of QDCBest times to use QDCSlide 18MAchine Readable Cataloging (MARC)More about MARCContent/value standards for MARCLimitations of MARCGood times to use MARCSlide 24MARC in XML (MARCXML)Limitations of MARCXMLBest times to use MARCXMLSlide 28Metadata Object Description Schema (MODS)Differences between MODS and MARCContent/value standards for MODSLimitations of MODSGood times to use MODSSlide 34Mapping between metadata formatsTypes of mapping logicCommon mapping pitfallsNo, really, which one do I pick?More informationQuestions?Alphabet Soup:Choosing Among DC, QDC, MARC, MARCXML, and MODSAlphabet Soup:Choosing Among DC, QDC, MARC, MARCXML, and MODSJenn RileyIU Metadata LibrarianDLP Brown Bag SeriesFebruary 25, 2005Jenn RileyIU Metadata LibrarianDLP Brown Bag SeriesFebruary 25, 2005Descriptive metadataDescriptive metadataEnables users to find relevant materialsUsed by many different knowledge domainsMany potential representationsControlled byData structure standardsData content standardsData value standardsEnables users to find relevant materialsUsed by many different knowledge domainsMany potential representationsControlled byData structure standardsData content standardsData value standardsSome data structure standardsSome data structure standardsDublin Core (DC)Unqualified (simple)QualifiedMAchine Readable Cataloging (MARC)MARC in XML (MARCXML)Metadata Object Description Schema (MODS)Dublin Core (DC)Unqualified (simple)QualifiedMAchine Readable Cataloging (MARC)MARC in XML (MARCXML)Metadata Object Description Schema (MODS)How do I pick one?How do I pick one?Genre of materials being described Format of materials being describedNature of holding institutionRobustness needed for the given materials and usersWhat others in the community are doingDescribing original vs. digitized itemMechanisms for providing relationships between recordsPlan for interoperability, including repeatability of elementsFormats supported by your delivery softwareMore information on handoutGenre of materials being described Format of materials being describedNature of holding institutionRobustness needed for the given materials and usersWhat others in the community are doingDescribing original vs. digitized itemMechanisms for providing relationships between recordsPlan for interoperability, including repeatability of elementsFormats supported by your delivery softwareMore information on handoutDublin Core (DC)Dublin Core (DC)15-element setNational and international standard2001: Released as ANSI/NISO Z39.852003: Released as ISO 15836Maintained by the Dublin Core Metadata Initiative (DCMI)Other playersDCMI Working GroupsDC Usage Board15-element setNational and international standard2001: Released as ANSI/NISO Z39.852003: Released as ISO 15836Maintained by the Dublin Core Metadata Initiative (DCMI)Other playersDCMI Working GroupsDC Usage BoardDCMI missionDCMI missionThe mission of DCMI is to make it easier to find resources using the Internet through the following activities:Developing metadata standards for discovery across domains, Defining frameworks for the interoperation of metadata sets, and, Facilitating the development of community- or disciplinary-specific metadata sets that are consistent with items 1 and 2 The mission of DCMI is to make it easier to find resources using the Internet through the following activities:Developing metadata standards for discovery across domains, Defining frameworks for the interoperation of metadata sets, and, Facilitating the development of community- or disciplinary-specific metadata sets that are consistent with items 1 and 2DC PrinciplesDC Principles“Core” across all knowledge domainsNo element requiredAll elements repeatable1:1 principle“Core” across all knowledge domainsNo element requiredAll elements repeatable1:1 principleDC encodingsDC encodingsHTML <meta>XMLRDF[Spreadsheets][Databases]HTML <meta>XMLRDF[Spreadsheets][Databases]Content/value standards for DCContent/value standards for DCNone requiredSome elements recommend a content or value standard as a best practiceNone requiredSome elements recommend a content or value standard as a best practiceRelationSourceSubjectTypeRelationSourceSubjectTypeCoverageDateFormatLanguageIdentifierCoverageDateFormatLanguageIdentifierSome limitations of DCSome limitations of DCCan’t indicate a main title vs. other subordinate titlesNo method for specifying creator rolesW3CDTF format can’t indicate date ranges or uncertaintyCan’t by itself provide robust record relationshipsCan’t indicate a main title vs. other subordinate titlesNo method for specifying creator rolesW3CDTF format can’t indicate date ranges or uncertaintyCan’t by itself provide robust record relationshipsGood times to use DCGood times to use DCCross-collection searchingCross-domain discoveryMetadata sharingDescribing some types of simple resourcesMetadata creation by novicesCross-collection searchingCross-domain discoveryMetadata sharingDescribing some types of simple resourcesMetadata creation by novicesDC[record]QDC[record][collection]MARC[record][collection]MARCXML[record]MODS[record][collection]Record formatXMLRDF(X)HTMLField labels TextReliance on AACRNoneCommon method of creationBy novices, by specialists, and by derivationQualified Dublin Core (QDC)Qualified Dublin Core (QDC)Adds some increased specificity to Unqualified Dublin CoreSame governance structure as DCSame encodings as DCSame content/value standards as DCListed in DMCI TermsAdditional principlesExtensibilityDumb-down principleAdds some increased specificity to Unqualified Dublin CoreSame governance structure as DCSame encodings as DCSame content/value standards as DCListed in DMCI TermsAdditional


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