- Application Profile
- Blank Node
In RDF, a blank node is a unique identifier used, typically, within the local scope of a specific file or RDF store. As described in RDF 1.1 Concepts and Abstract Syntax, a blank node is distinct both from an IRI and a Literal. Blank nodes are of interest only to users or creators of RDF applications.
- Compact IRI
An IRI represented by an abbreviated syntax in which a label associated with a namespace (the prefix) is followed by a colon and by a local name which, taken together, can be expanded into a full IRI. For example, if the prefix “dcterms:” is associated with the namespace “http://purl.org/dc/terms/”, then the prefixed name “dcterms:creator” can be expanded into “http://purl.org/dc/terms/creator”.
- CSV File
A text file in which data values are delimited with commas or with other standard punctuation.
As per RDF 1.1 Concepts and Abstract Syntax, a datatype is used to tag a Literal as being a specific type of date or number or, by default, just a plain string. In RDF, datatypes are identified with IRIs.
- DCTAP Element
One of a dozen or so labels defined in the DCTAP Model, such as propertyID, valueConstraint, and shapeLabel, used as column headers in a CSV.
Something, typically in the real world, that is described by Instance Data.
- Instance Data
Records or, more recently, “graphs” that carry Descriptions, traditionally on paper but now, more typically, on the Web.
An Internationalized Resource Identifier is a Web-based identifier that builds on and expands the Uniform Resource Identifier (URI), and is used, for our purposes, to provide the Properties, Entities, and other components of Instance Data, with identity within the globally managed context of the Web.
- Language Tag
A language tag is an abbreviated name for a natural language, such as
frfor French or
fr-CAfor Canadian French. Language tags are used to identify the language of a Literal. Standard sets of language tags serve as a controlled vocabulary of identifiers for languages.
Along with IRI and Blank Node, Literal is one of the three allowable node types defined in the abstract syntax of RDF. For the purposes of DCTAP, it is close enough to think of literals as strings. Literals are used for values such as strings, numbers, and dates. Interested readers can learn more about how literals relate to “lexical forms”, Datatypes, and Language Tags by consulting RDF 1.1 Concepts and Abstract Syntax.
A controlled list of valid options, one of which can be picked.
- Picklist Element
A controlled term in Instance Data denoting an attribute of an Entity referenced in a Statement.
- Predicate Constraint
A property-value pair in Instance Data used in a Description to make claims about an Entity.
- Statement Template
- Value Constraint
A set of Properties and other terms used in Instance Data and referred to in constraints defined in an Application Profile. By convention, all properties referenced in a Dublin-Core-style Application Profile are defined and documented separately from the profile itself.