Presentation on theme: "Source, Relation, Identifier. Topics zDefinitions need attention zPresentation in RDF zIs Source a type of Relation? zWhat is actually identified yActual."— Presentation transcript:
Topics zDefinitions need attention zPresentation in RDF zIs Source a type of Relation? zWhat is actually identified yActual resource yRepresentation/presentation zHow identify non-electronic resources?
Topics zLabel for Relation type yCaptions zTransforming data DC to MARC/MARC to DC difficult, especially for source zDoes DC support nested descriptions f related resources? zIdentifiers vs. locators; what should go in the Identifier element?
Topics zHow is the availability of a resource made known? zHow should issues of versioning be handled? zWhat is the status of the Relation types? zTerminology yWork, expression, manifestation, item
Dumb-down Rule zFollow the RDF Value arcs to get a string. zThere is a limit to how dumb you can get. yJuhas Law zThere is a limit to how smart you could get. yOles Corollary
Problems with Relation zCurrent RFC definition requires two components yIdentifier yExpression of relation zHow expressed in unqualified DC? zWhat are dumb-down rules for qualified DC?
Options zFix the definition zInline coding IsBasedOn http://another/resource zRethink the data model zRequire smarter parsing and dumb-down rules
Proposal zModify definition for unqualified DC 1.1 as follows: Relation A standard identifier or free-text string identifying a related resource
Is Source a type of Relation? zYes zIn effect, a particular qualifier, IsSourceFor, has been merged with the Relation element to create the Source element.
Source zDesirable functions yPoint to a related resource yExpress a relationship yProvide metadata for or a pointer to metadata for the related resource
Source: Preliminary Thoughts zLeave Source in unqualified DC zIn qualified DC, state that Source is a Relation with appropriate qualifier zBeing a relation, its values are the same as those allowed for relations. (proposed to be an identifier or free text). zRevise definition zMore work needed...