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| − | The current Higgins ontology temporarily attached [http://spwiki.editme.com/files/HigginsOntology/higgins0.5.1.owl here (v0.5.1)] defines a base set of classes and properties. The previous version (v0.4.4) is still located at the official URL here: http://www.eclipse.org/higgins/ontologies/2006/higgins.owl but it will be replaced after a review of 0.5.1 has concluded.
| + | #REDIRECT [[Higgins Data Model 1.0]] |
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| − | ''Note: The properties of the Context container itself are attached to special object called ContextObject within the instance data and also described in the ontology.''
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| − | Changes from 0.4.4 to 0.5.0:
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| − | # ContextXRI property has been renamed ContextURI (the URI may be an XRI)
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| − | # All "metadata" properties have been moved from AttributeStatements to a newly created class AttributeMetadata. This new class acts separates out metadata about Attributes (e.g. source) from the normal "values" of Attributes.
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| − | # Two new kinds of metadata have been added: lastModified and syncConflict
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| − | # XML/RDF in general has been cleaned up (more use of &xsd; &owl; etc.)
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| − | # Ontology header has been cleaned up. It uses the owl:Ontology syntax. It has a version number (0.5.0). It also now also has a comment and a label.
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| − | ==Classes==
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| − | # AttributeDatatypeValue (subclass of AttributeValue)
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| − | # AttributeMetadata
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| − | #* 0..1 hasSource
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| − | #* 0..N hasTimeSpan
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| − | #* 0..1 lastModified
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| − | #* 0..1 syncConflict
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| − | # AttributeObjectValue
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| − | # AttributeValue
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| − | #* 0..1 hasMetadata
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| − | #* 0..1 objectValue
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| − | #* 0..1 datatypeValue
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| − | # ContextObject
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| − | #* 0..N hasContextRelationships
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| − | # ContextRelationship
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| − | #* 0..N contextURI
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| − | # DigitalSubject (see [[Digital Subject]])
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| − | #* 1..1 uniqueIdentifier
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| − | #* 0..N hasTimeSpan
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| − | # SubjectRelationship a subClass of AttributeStatement
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| − | #* 1..1 contextURI
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| − | #* 1..1 subjectCUID
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| − | # TimeSpan
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| − | #* 1..1 validFrom
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| − | #* 1..1 validTo
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| − | ===Subclasses of AttributeValue===
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| − | # StringAttributeValue
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| − | # ...we need to create all the rest here (DateAttributeValue, NonNegativeIntegerAttributeValue, etc. for each of the XML Schema literal types used by OWL)
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| − | ==DataType (literal valued) Properties==
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| − | # contextURI - domain(ContextRelationship, SubjectRelationship), range("anyURI")
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| − | # datatypeValue - domain(AttributeValue)
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| − | # identifier - domain(AttributeStatement), range(xsd:normalizedString)
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| − | # lastModified - domain(AttributeMetadata), range(xsd:dateTime)
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| − | # subjectCUID - domain(SubjectRelationship), range(xsd:normalizedString)
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| − | # syncConflict - domain(AttributeMetadata), range(xsd:boolean)
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| − | # uniqueIdentifier - domain(DigitalSubject), range(xsd:normalizedString). Uniquely identifies a DigitalSubject within a context
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| − | # validFrom - domain(TimeSpan), range(xsd:date)
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| − | # validTo - domain(TimeSpan), range(xsd:date)
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| − | ===Sub-Properties of datatypeValue===
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| − | # stringDatatypeValue - range(xsd:string)
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| − | ==Object (object valued) Properties==
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| − | # hasContextRelationship - domain(ContextObject), range(ContextRelationship)
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| − | # hasMetadata - domain(AttributeStatement), range(AttributeMetadata)
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| − | # hasSource - domain(AttributeMetadata), range(SubjectRelationship). The value is a DigitalSubjectRelationship that indicates the authoritative source of the AttributeStatement having this property
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| − | # hasTimeSpan - domain(DigitalSubject, AttributeMetadata), range(TimeSpan)
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| − | # objectValue - domain(AttributeValue)
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| − | ==Open Issues==
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| − | # We've agreed to add a "source" property to the Digital Subject's CUID. But does this really make sense at the DS instance level?
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