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Here is a recent translation of the Fedora Rels Ext ontology in n3 for discussion purposes

...

These are the namespace/prefix mappiings utilized int he examples below

Panelcode


 @prefix r:

<http

 <http://www.w3.org/1999/02/22-rdf-syntax-

ns#^{Image Removed}>.
@prefix s: <http

ns#>.
 @prefix s: <http://www.w3.org/2000/01/rdf-

schema#^{Image Removed}>.
@prefix

schema#>.
 @prefix rels: <info:fedora/fedora-system:def/relations-external#>.

Abstract Fedora Relationship

The primitive property for all object-to-object relationships in the fedora ontology

Panelcode


 <rels:fedoraRelationship>

a


    a    r:Property.

...

Comments:

...

This can be classified as similar to a UML Association (representing some sort of relationship between two objects) --Mark Diggory 16:59, 1 October 2008 (EDT)

Abstract Parts

...

Is Part

...

Of

A definition of the generic part/whole relationship between fedora objects. The subject is a fedora object representing a part and the predicate is a fedora object representing a whole.

Panelcode


 <rels:isPartOf>

a


    a    r:Property;


    s:subPropertyOf


       <rels:fedoraRelationship>.

...

Has Part

A definition of the generic part/whole relationship between fedora objects. The subject is a fedora object representing a whole and the predicate is a fedora object representing a part.

Panelcode


 <rels:hasPart>

a


    a    r:Property;


    s:subPropertyOf


       <rels:fedoraRelationship>.

...

Comments:

...

Parts represent Composition Associations from UML, Compositions reflect a "whole/part" relationship. --Mark Diggory 17:02, 1 October 2008 (EDT)
_ I have questions how this relates to http://dublincore.org/documents/dcmi-terms/#terms-isPartOf I believe theres should be some documentation around this otherwise, these should just be refinements of "isPart"._ --Mark Diggory 17:19, 1 October 2008 (EDT)

Constituents

...

Is Constituent

...

Of

This is a refinement of the generic part/whole relationship in the "made of" sense with referential integrity implications. The subject is a fedora object representing a constituent part and the predicate is a fedora object representing a whole of which the subject is a constituent. The constituent part cannot stand alone in any meaningful way without reference to the whole.

Panelcode


 <rels:isConstituentOf>

a


    a    r:Property;


    s:subPropertyOf


       <rels:isPartOf>.

...

Has Constituent

This is a refinement of the generic part/whole relationship in the "made of" sense with referential integrity implications. The subject is a fedora object representing a whole that is made of constituent parts and the predicate is a fedora object representing one of the constituent parts. The whole loses its integrity if the constituent part is removed.

Panelcode


 <rels:hasConstituent>

a


    a    r:Property;


    s:subPropertyOf


       <rels:hasPart>.

...

Comments:

...

This is a further refinement a Composition Association, forcing referential integrity to be maintained, I'm not 100% convinced its neccessary but may have a usefulness if the system is allowing Compositions that do not require addressablitiy. --Mark Diggory 17:24, 1 October 2008 (EDT)

Members

...

Is Member

...

Of

This is a refinement of the generic part/whole relationship that defines a set membership relationship between fedora objects. The subject is a fedora object representing a member of a set and the predicate is a fedora object representing a whole set of which the subject is a member. The member can be separated from the set and still stand alone as an object in its own right.

Panelcode


 <rels:isMemberOf>

a


    a    r:Property;


    s:subPropertyOf


       <rels:isPartOf>.

...

Has Member

This is a refinement of the generic part/whole relationship that defines a set membership relationship between fedora objects. The subject is a fedora object representing a whole set and the predicate is a fedora object representing a member in the set. The set does not lose its integrity if a member is removed from the set.

Panelcode


 <rels:hasMember>

a


    a    r:Property;


    s:subPropertyOf


       <rels:hasPart/>.

...

Comments:

...

I'm not convinced this is very different at all from a "hasPart" because "Constitutent" could just be considered a restriction on Membership. --Mark Diggory 17:26, 1 October 2008 (EDT)

Subsets

...

Is Subset

...

Of

This is a refinement of the generic set membership relationship to indicate the notion of a subset. The subject is a fedora object that represents a subset and the predicate is a fedora object that represents the set of which the subject is a subset.

Panelcode


 <rels:isSubsetOf>

a


    a    r:Property;


    s:subPropertyOf


       <rels:isMemberOf>.

...

Has Subset

This is a refinement of the generic set membership to indicate the notion of a subset. The subject is a fedora object that represents a set of objects and the predicate is a fedora object that represents a subset of the subject set.

Panelcode


 <rels:hasSubset>

a


    a    r:Property;


    s:subPropertyOf


       <rels:hasMember>.

...

Comments:

...

I wonder about this one as well, because RDF is an open model, unless stated otherwise, almost any relation may be expressed by another agnetagent/authority to the point that there may be additional assertions of inclusion into any such Collection. --Mark Diggory 17:29, 1 October 2008 (EDT)

Collections

...

Is Member of

...

Collection

This is a refinement of the generic membership relationship to indicate the notion of a digital collection. The subject is a fedora object representing an item in a digital collection and the predicate is a fedora object representing a whole digital collection.

Panelcode


 <rels:isMemberOfCollection>

a


    a    r:Property;


    s:subPropertyOf


       <rels:isMemberOf>.

...

Has Collection

...

Member

This is a refinement of the generic membership to indicate the notion of a digital collection. The subject is a fedora object representing a whole digital collection and the predicate is a fedora object representing an item that is a member of the digital collection.

Panelcode


 <rels:hasCollectionMember>

a


    a    r:Property;


    s:subPropertyOf


       <rels:hasMember>.

Derivations

...

Is Derivation

...

Of

A definition of a generic derivation relationship between fedora objects. The subject is a fedora object that represents a derivation of the predicate which is another fedora object.

Panelcode


 <rels:isDerivationOf>

a


    a    r:Property;


    s:subPropertyOf


       <rels:fedoraRelationship>.

...

Has Derivation

A definition of a generic derivation relationship between fedora objects. The subject is a fedora object and the predicate is a fedora object that represents a derivation of the subject.

Panelcode


 <rels:hasDerivation>

a


    a    r:Property;


    s:subPropertyOf


       <rels:fedoraRelationship>.

Dependencies

...

Is Dependent

...

Of

A definition of a generic dependency relationship between fedora objects. The subject is a fedora object that represents a dependent and the predicate is another fedora object that is depended upon by the subject.

Panelcode


 <rels:isDependentOf>

a


    a    r:Property;


    s:subPropertyOf


       <rels:fedoraRelationship>.

...

Has Dependent

A definition of a generic dependency relationship between fedora objects. The subject is a fedora object that is depended upon and the predicate is a fedora object that represents a dependent of the subject.

Panelcode


 <rels:hasDependent>

a


    a    r:Property;


    s:subPropertyOf


       <rels:fedoraRelationship>.

Descriptions

...

Is Description

...

Of

A generic descriptive relationship between fedora objects. The subject is a fedora object that represents a descriptive entity and the predicate is a fedora object that is being described in some manner by the subject.

Panelcode


 <rels:isDescriptionOf>

a


    a    r:Property;


    s:subPropertyOf


       <rels:fedoraRelationship>.

...

Has Description

A generic descriptive relationship between fedora objects. The subject is a fedora object that is being described in some manner and the predicate is a fedora object that represents a descriptive entity that is about the subject.

Panelcode


 <rels:HasDescription>

a


    a    r:Property;


    s:subPropertyOf


       <rels:fedoraRelationship>.

Metadata

...

Is MetadataFor

A refinement of the generic descriptive relationship indicating a metadata relationship between fedora objects. The subject is a fedora object that represents metadata and the predicate is a fedora object for which the subject serves as metadata.

Panelcode


 <rels:isMetadataFor>

a


    a    r:Property;


    s:subPropertyOf


       <rels:isDescriptionOf>.

...

Has Metadata

A refinement of the generic descriptive relationship indicating a metadata relationship between fedora objects. The subject is a fedora object and the predicate is a fedora object that represents metadata about the subject.

Panelcode


 <rels:HasMetadata>

a


    a    r:Property;


    s:subPropertyOf


       <rels:hasDescription>.

Annotations

...

Is Annotation

...

Of

A refinement of the generic descriptive relationship indicating a commentary relationship between fedora objects. The subject is a fedora object that represents an annotation or comment and the predicate is a fedora object that is being commented upon by the subject.

Panelcode


 <rels:isAnnotationOf>

a


    a    r:Property;


    s:subPropertyOf


       <rels:isDescriptionOf>.

...

Has Annotation

A refinement of the generic descriptive relationship indicating a commentary relationship between fedora objects. The subject is a fedora object that is being commented on and the predicate is a fedora object that represents an annotation or comment about the subject.

Panelcode


 <rels:HasAnnotation>

a


    a    r:Property;


    s:subPropertyOf


       <rels:hasDescription>.

Equivalencies

...

Has Equivalent

A definition of a generic equivalence relationship between fedora objects. The subject is a fedora object that is equivalent to the predicate which is another fedora objects.

Panelcode


 <rels:hasEquivalent>

a


    a    r:Property;


    s:subPropertyOf


       <rels:fedoraRelationship>.

...

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Page History

Versions Compared

Old Version 2

New Version 3

Key

Abstract Fedora Relationship

Comments:

This can be classified as similar to a UML Association (representing some sort of relationship between two objects) --Mark Diggory 16:59, 1 October 2008 (EDT)

Abstract Parts

Is Part

Of

Has Part

Comments:

Constituents

Is Constituent

Of

Has Constituent

Comments:

This is a further refinement a Composition Association, forcing referential integrity to be maintained, I'm not 100% convinced its neccessary but may have a usefulness if the system is allowing Compositions that do not require addressablitiy. --Mark Diggory 17:24, 1 October 2008 (EDT)

Members

Is Member

Of

Has Member

Comments:

I'm not convinced this is very different at all from a "hasPart" because "Constitutent" could just be considered a restriction on Membership. --Mark Diggory 17:26, 1 October 2008 (EDT)

Subsets

Is Subset

Of

Has Subset

Comments:

I wonder about this one as well, because RDF is an open model, unless stated otherwise, almost any relation may be expressed by another agnetagent/authority to the point that there may be additional assertions of inclusion into any such Collection. --Mark Diggory 17:29, 1 October 2008 (EDT)

Collections

Is Member of

Collection

Has Collection

Member

Derivations

Is Derivation

Of

Has Derivation

Dependencies

Is Dependent

Of

Has Dependent

Descriptions

Is Description

Of

Has Description

Metadata

Is MetadataFor

Has Metadata

Annotations

Is Annotation

Of

Has Annotation

Equivalencies

Has Equivalent