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the OAI-PMH

Requests. repos i tory. harves ter. Replies. the OAI-PMH. service provider. data provider. 6. Reply. XML Schema Self contained. Core concepts in OAI-PMH. low-barrier interoperability data-provider & service-provider model metadata harvesting model. OAI-PMH. HTTP based.

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the OAI-PMH

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  1. Requests repos i tory harves ter Replies the OAI-PMH service provider data provider 6

  2. Reply • XML Schema • Self contained Core concepts in OAI-PMH • low-barrier interoperability • data-provider & service-provider model • metadata harvesting model OAI-PMH HTTP based • shared metadata format and parallel, community-specific metadata formats Dublin Core • acceptable use Community specific, oai-rights

  3. resource OAI-PMH sets OAI-PMH identifier item OAI-PMH identifier metadataPrefix datestamp Dublin Core metadata MARCXML metadata records OAI-PMH data model entry point to all records pertaining to the resource metadata pertaining to the resource

  4. repos i tory harves ter OAI-PMH harvesting tools service provider data provider • Supporting protocol requests: • Identify • ListMetadataFormats • ListSets

  5. repos i tory harves ter OAI-PMH harvesting tools service provider data provider • Supporting protocol requests: • Identify • ListMetadataFormats • ListSets • Harvesting protocol requests: • ListRecords • ListIdentifiers • GetRecord

  6. repos i tory harves ter OAI-PMH harvesting tools service provider data provider Datestamp Identifier Set Records

  7. repos i tory harves ter harvesting requests service provider data provider * from=a * until=b * set=klm ListRecords * metadataPrefix=dc • ListRecords / Time / Request • REPEAT • Identifier • Datestamp • Metadata • /REPEAT

  8. OAI-PMH identifiers • Not (necessarily) identifier of the resource • Each itemmust have a globally unique identifier • identifiers must follow rules for valid URIs • Example: • oai:<archiveId>:<recordId> • oai:etd.vt.edu:etd-1234567890 • Each identifier must resolve to a single item and always to the same item • Can’t reuse OAI itemidentifiers

  9. OAI-PMH datestamps • Needed for every OAI record to support incremental harvesting • Must be updated when addition or modification or deletion made in order to ensure changes are correctly propagated to harvesters • Also for dynamically generated metadata formats • Different from dates within the metadata – OAI datestamp is used only for harvesting • Can be either YYYY-MM-DD or YYYY-MM-DDThh:mm:ssZ (must be GMT timezone)

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