- Diff for "EntityRelationshipModel"

Differences between versions dated 2010-11-07 18:25:17 and 2010-11-30 15:20:25

Entity-Relationship Model for the DC-Lib AP for Bibliographic Text Resources

According to Singapore Framework an application profile must provide a domain model which defines the basic entities described by the profile and their fundamental relationships. Basis of this model are the Functional Requirements which in our case demand simplicity and feasibility on the one hand and linked data compatibility on the other. Furthermore the Functional Requirements demand a distinction between a publication and its single copies to describe availability and accessability of items in libraries. And finally metadata should be compliant with metadata of other library applications in the long run.

For these reasons we developed a non-FRBR model, aligning on the model of the Functional Requirements of Bibliographic Records (FRBR) in some ways.

FRBR distinguishes the following Group 1 entities: work, expression, manifestation and item. Our model distinguishes on this level only two entities: bibliographic text resource and item.
FRBR distinguishes the following Group 2 entities: person and corporate body. Our model uses on this level only one entity: agent.
FRBR distingiushes the followong Group 3 entities: concept, object, event und place. Our model uses on this level only one entity: concept

The entity-relationship model represents the relations between these entities:

where

any Bibliographic Text Resource is an instance of the class bibliographicTextResource, which is a subclass of dcterms:bibliographicResource. (For further definition of bibliographicTextResource see LibClasses) A Bibliographic Text Resource
- has to be exemplified by one or more items
- has to be created, contributed or published by one or more Agents
- may have one or more Concepts as a subject
- may have relations to one or more other Bibliographic Text Resources

Instances of the class bibliographicTextResource shall be described using the terms of the DCLIB Bibliographic Text Resource Description Set Profile (see BibliographicResourceProperties).

any Item is an instance of the class frbr:Item. An Item
- is an exemplar of one and only one Bibliographic Text Resource
- is available at one and only one Agent
- may be part of one or more Collections

Instances of this class shall be described using the terms of the DCLIB Item Description Set Profile (see ItemProperties).

any Collection is an instance of dcmitype:Collection. For describing instances of this class we recommend to use terms of the Dublin Core Collections Application Profile.
any Agent is an instance of dcterms:Agent. For describing instances of this class we recommend to use terms of FOAF vocabulary.
any Concept is an instance of skos:concept. For describing instances of this class we recommend to use terms of SKOS vocabulary.

The model defines the following classes:

where the Application profile provides Description Templates only for the entities my:bibliographicTextResource (see BibliographicResourceProperties and my:Item (see ItemProperties).

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my:Copic rdf:type skos:Concept .	my:Concept rdf:type skos:Concept .