X-Git-Url: https://git.ladys.computer/Vocab/blobdiff_plain/ff53d204ab76764a74b94a7e387c9644e6bbbd3a..91b1805cbc1b68e892c8ea96a4320faff21fef21:/data/named_individuals/_PCDM_

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+<?xml version="1.0"?>
+<!--
+SPDX-FileCopyrightText: 2025 Lady <https://www.ladys.computer/about/#lady>
+SPDX-License-Identifier: CC0-1.0
+-->
+<!DOCTYPE NamedIndividual SYSTEM "../../DTD">
+<NamedIndividual name="https://github.com/duraspace/pcdm/wiki">
+	<label xml:lang="en">P·C·D·M</label>
+	<comment xml:lang="en">
+		<p>
+			The Portland Common Data Model (P·C·D·M) is a set of vocabularies published by Duraspace and used by certain institutions and communities in the library and cultural heritage sphere for modelling their collections.
+			It comprises five parts :⁠—
+		</p>
+		<list>
+			<item>
+				<p>
+					<strong>P·C·D·M Models</strong> builds on top of <ptr target="(OAI-ORE)"/> to provide basic structural modelling for <ref target="pcdm:Collection">Collections</ref>, their <ref target="pcdm:Object">Objects</ref>, and the <ref target="pcdm:File">Files</ref> associated with them.
+					This ontology only omits the term <resource name="pcdm:AlternateOrder"/>, whose meaning and utility is unclear.
+				</p>
+			</item>
+			<item>
+				<p>
+					<strong>P·C·D·M Use</strong> provides subclasses for <ptr target="pcdm:File"/> which identify its intended <em>use</em>.
+					The choice of modelling this using classes, rather than a relationship like <ptr target="anno:hasPurpose"/>, is a bit suspect, but a conversion from one to the other is not especially difficult.
+				</p>
+			</item>
+			<item>
+				<p>
+					<strong>P·C·D·M Rights</strong> provides a few terms for specifying temporary, time‐limited overrides to rights statements.
+					As this is use·case is fairly domain‐specific and niche, this ontology does not bother defining its terms.
+				</p>
+			</item>
+			<item>
+				<p>
+					<strong>P·C·D·M Works</strong> expands P·C·D·M Models to add the concepts of <ref target="pcdmworks:Work">Work</ref> and <ref target="pcdmworks:FileSet">File Set</ref>.
+					It also defines two classes for use with <ptr target="(IIIF)"/>, <resource name="pcdmworks:Range"/> and <resource name="pcdmworks:TopRange"/>, which are more suspect in utility and not included in this ontology.
+				</p>
+			</item>
+			<item>
+				<p>
+					<strong>P·C·D·M File Formats</strong> provides a set of <ref target="skos:Concept">Concepts</ref> for denoting specific file format genres.
+				</p>
+			</item>
+		</list>
+	</comment>
+	<type>
+		<resource name="dcterms:BibliographicResource"/>
+	</type>
+</NamedIndividual>