7. Terminology
This document uses the following terms:
class
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A group of resources containing members that have attributes,
behaviours, relationships or semantics in common; a kind of category.
class URI
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A URI that identifies a class.
described resource
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A resource that is described by a description.
described resource URI
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A URI that identifies the described resource.
description
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A set of one or more statements about one, and only one, described resource.
description set
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A set of one or more descriptions.
element
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A synonym for property. The DCMI usage of element should not be confused with the usage of element as a structural markup component within an XML document.
element refinement
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A property of a resource that shares the meaning of a particular DCMI property but with narrower semantics. Since element refinements are properties, they can be used in metadata descriptions independently of the properties they refine. In DCMI practice, an element refinement refines just one parent DCMI property.
encoding scheme
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The generic name used for the terms that are now referred to specifically as vocabulary encoding schemes or syntax encoding schemes. While not part of the Abstract Model per se, the generic term can be useful in certain types of usage guidelines.
encoding scheme URI - @@@IS THIS HERE FOR REASONS OF SYMMETRY? MAYBE DELETE ENTIRELY?
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An encoding scheme URI is either a vocabulary encoding scheme URI or a syntax encoding scheme URI.
has domain
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A relationship between a property and a class indicating that if a described resource is related to a value by the property, then it follows that the described resource is an instance of that class.
has range
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A relationship between a property and a class indicating that if a described resource is related to a value by the property, then it follows that the value is an instance of that class.
instance of
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An instance of relationship between a resource and a class indicates a class of which the resource is an instance.
marked-up text
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A string that contains HTML, XML or other markup (for example TeX) and that is associated with the value of a property.
media type
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A MIME Media Type (as defined by RFC 2045 and RFC 2046). - @@@ADD SPACES??
member of
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A member of relationship between a resource and a vocabulary encoding scheme indicates a set of which the resource is a member.
property
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A specific aspect, characteristic, attribute, or relation used to describe resources.
property URI
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A property URI is a URI that identifies a single property.
property/value pair
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A property/value pair is the combination of a property and a value, used to describe a resource.
qualifier
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The generic name used between 1997 and 2005 for the terms that are now usually referred to specifically as element refinements or encoding schemes.
record
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A description set that is instantiated according to one of the DCMI encoding guidelines (XHTML meta tags, XML, RDF/XML, etc.)
resource
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A resource is anything that has identity. Familiar examples
include an electronic document, an image, a service (e.g., "today's
weather report for Los Angeles"), and a collection of other resources. Not all resources are network "retrievable"; e.g., human beings, corporations, concepts and bound books in a library can also be considered resources.
rich representation
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Some marked-up text, an image, a video, some audio, etc. (or some combination thereof) that is associated with the value of a property.
statement
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An instantiation of a property/value pair made up of a property URI (a URI that identifies a property), zero or one value URI (a URI that identifies the value of the property), zero or one vocabulary encoding scheme URI (a URI that identifies the vocabulary encoding scheme of which the value is a member), zero or one value class URI (a URI that identifies the class of the value) and zero or more value representations of the value.
sub-class of
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A relationship between two classes indicating that the two classes share some semantics such that all resources that are instances of the sub-class are also instances of the related class).
sub-property of
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A relationship between two properties indicating that the two properties share some semantics such that whenever a resource is related to a value by the sub-property, it follows that the resource is also related to that same value by the property.
syntax encoding scheme
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A specification which describes a mapping between that set of strings and a set of resources.
The mapping rules may define how the string is structured (e.g. DCMI
Box) or they may simply enumerate all the strings and the corresponding
resources (e.g. ISO 3166).
syntax encoding scheme URI
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A syntax encoding scheme URI is a URI that identifies a syntax encoding scheme.
term
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A property (i.e. element or element refinement), class, vocabulary encoding scheme, or syntax encoding scheme.
term URI
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A URI that identifies a term.
value
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The physical or conceptual entity that is associated with a property when it is used to describe a resource.
value URI
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A value URI is a URI that identifies the value of a property.
value representation
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A value representation is a surrogate for (i.e. a representation of) the value.
value string
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A value string is a simple string that represents the value of a property. In general, a value string should not contain any marked-up text.
value string language
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An ISO language tag that indicates the language of the value string.
value class URI
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A URI that identifies a class of which the value is an instance.
vocabulary encoding scheme
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An enumerated set of resources.
vocabulary encoding scheme URI
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A URI that identifies a vocabulary encoding scheme.