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Understanding XML Metadata and Namespace for Resource Description at University of Illinois

This guide provides insight into XML metadata, namespaces, and various formats like Dublin Core for resource description at the University of Illinois at Urbana-Champaign. It covers the significance of namespaces, examples, Dublin Core elements, mapping efforts to MARC, FGDC, EAD, and more. The document also delves into qualified Dublin Core, resource description frameworks like RDF, and interoperability between applications for information exchange.

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Understanding XML Metadata and Namespace for Resource Description at University of Illinois

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  1. University of Illinois at Urbana-ChampaignXML Metadata Thomas G. Habingthabing@uiuc.eduTimothy W. Colet-cole3@uiuc.edu Grainger Engineering Library Information Center 30 March 2001 http://dli.grainger.uiuc.edu/Publications/TWCole/ LIT_OAIAlpha/

  2. XML Namespaces • Namespaces http://www.w3.org/TR/REC-xml-names/ • <prefix:tagname xmlns:prefix=“http://some.uri”> • Namespace prefix is an arbitrary string • Namespace URI is what is significant • Default namespaces: • <tagname xmlns=“http://some.org”> • SHOW EXAMPLES • Namespace URI is not related to schema validation OAI Metadata -- Univ. of Illinois at UC

  3. Dublin Core • DC http://purl.org/dc/documents/rec-dces-19990702.htm • Dublin Core = Resource Discovery • Assigns Meaning to 15 Elements:Title Creator DateSubject Publisher FormatDescription Contributor IdentifierType Rights LanguageSource Relation Coverage OAI Metadata -- Univ. of Illinois at UC

  4. Dublin Core (cont.) • Usage is not always clear • Many mapping efforts underway • MARC  DC http://128.253.121.110/NSDLmetaWG/MARCtoDC.htm • FGDC  DC http://eeirc.nwrc.gov/pubs/crosswalk/dc7casestudy.htm • EAD  DC • RFC1807 (Dienst)  DC OAI Metadata -- Univ. of Illinois at UC

  5. oai_dc Metadata Format • http://www.openarchives.org/OAI/dc.xsd • http://bolder.grainger.uiuc.edu/oaisimple/oai.asp?verb=GetRecord&identifier=oai:uiuc:184500&metadataPrefix=oai_dc OAI Metadata -- Univ. of Illinois at UC

  6. Dublin Core Qualified • DCQ http://purl.org/dc/documents/rec/dcmes-qualifiers-20000711.htm • Dublin Core Qualifiers = Improved Discovery • Element Refinements • Date: Created, Valid, Available, Issued, Modified • Element Encoding Schemes • Date: DCMI Period, W3C-DTF • Authoritative Encoding in XML Still TBD OAI Metadata -- Univ. of Illinois at UC

  7. uiuc_dcq Metadata Format • http://bolder.grainger.uiuc.edu/oaisimple/uiuc_dcq.xsd • http://bolder.grainger.uiuc.edu/oaisimple/oai.asp?verb=GetRecord&identifier=oai:uiuc:184500&metadataPrefix=uiuc_dcq OAI Metadata -- Univ. of Illinois at UC

  8. Resource Description Framework • RDF http://www.w3.org/TR/REC-rdf-syntax/ • Resource Description Framework • “interoperability between applications that exchange machine-understandable information” • “Statements about the properties of resources” • “Statements about statements” • Containers: bag, seq, alt • Using RDF, DC, and DCQ together (dated) • http://www.ukoln.ac.uk/metadata/resources/dc/datamodel/WD-dc-rdf/ OAI Metadata -- Univ. of Illinois at UC

  9. RDF, DC, DCQ, et al. Together • Simple Examples • Complex Example • RDF Visualizer OAI Metadata -- Univ. of Illinois at UC

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