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 metadataEnables users to find relevant materialsUsed by many different knowledge domainsMany potential representationsControlled byData structure standardsData content standardsData value standardsEnables users to find relevant materialsUsed by many different knowledge domainsMany potential representationsControlled byData structure standardsData content standardsData value standardsSome data structure standardsSome data structure standardsDublin Core (DC)Unqualified (simple)QualifiedMAchine Readable Cataloging (MARC)MARC in XML (MARCXML)Metadata Object Description Schema (MODS)Dublin Core (DC)Unqualified (simple)QualifiedMAchine 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 describedNature of holding institutionRobustness needed for the given materials and usersWhat others in the community are doingDescribing original vs. digitized itemMechanisms for providing relationships between recordsPlan for interoperability, including repeatability of elementsFormats supported by your delivery softwareMore information on handoutGenre of materials being described Format of materials being describedNature of holding institutionRobustness needed for the given materials and usersWhat others in the community are doingDescribing original vs. digitized itemMechanisms for providing relationships between recordsPlan for interoperability, including repeatability of elementsFormats supported by your delivery softwareMore information on handoutDublin Core (DC)Dublin Core (DC)15-element setNational and international standard2001: Released as ANSI/NISO Z39.852003: Released as ISO 15836Maintained by the Dublin Core Metadata Initiative (DCMI)Other playersDCMI Working GroupsDC Usage Board15-element setNational and international standard2001: Released as ANSI/NISO Z39.852003: Released as ISO 15836Maintained by the Dublin Core Metadata Initiative (DCMI)Other playersDCMI Working GroupsDC Usage BoardDCMI missionDCMI missionThe 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 domainsNo element requiredAll elements repeatable1:1 principle“Core” across all knowledge domainsNo element requiredAll elements repeatable1:1 principleDC encodingsDC encodingsHTML <meta>XMLRDF[Spreadsheets][Databases]HTML <meta>XMLRDF[Spreadsheets][Databases]Content/value standards for DCContent/value standards for DCNone requiredSome elements recommend a content or value standard as a best practiceNone requiredSome elements recommend a content or value standard as a best practiceRelationSourceSubjectTypeRelationSourceSubjectTypeCoverageDateFormatLanguageIdentifierCoverageDateFormatLanguageIdentifierSome limitations of DCSome limitations of DCCan’t indicate a main title vs. other subordinate titlesNo method for specifying creator rolesW3CDTF format can’t indicate date ranges or uncertaintyCan’t by itself provide robust record relationshipsCan’t indicate a main title vs. other subordinate titlesNo method for specifying creator rolesW3CDTF format can’t indicate date ranges or uncertaintyCan’t by itself provide robust record relationshipsGood times to use DCGood times to use DCCross-collection searchingCross-domain discoveryMetadata sharingDescribing some types of simple resourcesMetadata creation by novicesCross-collection searchingCross-domain discoveryMetadata sharingDescribing some types of simple resourcesMetadata 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 CoreSame governance structure as DCSame encodings as DCSame content/value standards as DCListed in DMCI TermsAdditional principlesExtensibilityDumb-down principleAdds some increased specificity to Unqualified Dublin CoreSame governance structure as DCSame encodings as DCSame content/value standards as DCListed in DMCI TermsAdditional
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