169 lines
6.4 KiB
Markdown
169 lines
6.4 KiB
Markdown
---
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title: RDF
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TARGET DECK: Obsidian::STEM
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FILE TAGS: ontology::rdf
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tags:
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- ontology
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- rdf
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---
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## Overview
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The **Resource Description Framework** (RDF) is the foundational representation language of the Semantic Web. The basic building block of RDF is the **triple** containing a **subject**, **predicate**, and **object**. Global identifiers of resources are represented as [[uri|URIs]] (or, more generally, IRIs). These URIs can be expressed more compactly as [[uri#CURIEs|CURIEs]].
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%%ANKI
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Basic
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Which organization standardized RDF?
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Back: W3C
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Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
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<!--ID: 1722340624977-->
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END%%
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%%ANKI
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Basic
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What is W3C an acronym for?
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Back: **W**orld **W**ide **W**eb **C**onsortium.
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Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
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<!--ID: 1722340624982-->
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END%%
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%%ANKI
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Basic
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What is RDF an acronym for?
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Back: **R**esource **D**escription **F**ramework.
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Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
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<!--ID: 1722187893324-->
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END%%
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%%ANKI
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Basic
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What is considered the basic representation language of the Semantic Web?
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Back: RDF.
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Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
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<!--ID: 1722187893326-->
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END%%
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%%ANKI
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Cloze
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With respect to RDF, a {resource} is {anything representable on the web}.
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Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
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<!--ID: 1722187893328-->
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END%%
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%%ANKI
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Basic
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What aggregate concept is considered the basic building block of RDF?
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Back: The triple.
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Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
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<!--ID: 1722187893330-->
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END%%
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%%ANKI
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Basic
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What three components make up an RDF triple?
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Back: The subject, predicate, and object.
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Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
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<!--ID: 1722187893332-->
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END%%
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%%ANKI
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Cloze
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In RDF, a triple is a ({subject}, {predicate}, {object}) tuple.
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Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
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<!--ID: 1722187893333-->
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END%%
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%%ANKI
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Cloze
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A {subject} is to a semantic triple as a row number is to a relation record.
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Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
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<!--ID: 1722187893334-->
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END%%
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%%ANKI
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Cloze
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A {predicate} is to a semantic triple as an attribute is to a relation record.
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Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
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<!--ID: 1722187893335-->
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END%%
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%%ANKI
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Cloze
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An {object} is to a semantic triple as a value is to a relation record.
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Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
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<!--ID: 1722187893337-->
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END%%
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%%ANKI
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Basic
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Consider converting the following table to a triple. What is the subject?
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![[triple-table-repr.png]]
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Back: Row 2
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Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
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<!--ID: 1722188525589-->
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END%%
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%%ANKI
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Basic
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Consider converting the following table to a triple. What is the object?
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![[triple-table-repr.png]]
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Back: Hamlet
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Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
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<!--ID: 1722188525594-->
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END%%
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%%ANKI
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Basic
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Consider converting the following table to a triple. What is the predicate?
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![[triple-table-repr.png]]
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Back: Title
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Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
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<!--ID: 1722188525598-->
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END%%
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%%ANKI
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Basic
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RDF identifiers are represented using what?
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Back: URIs.
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Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
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<!--ID: 1722191359882-->
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END%%
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## Standard Namespaces
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W3C have defined a number of standard namespaces for use with Web technologies:
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* `xsd`
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* Refers to the XML schema definition.
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* `xmlns`
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* Refers to XML namespaces.
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* `rdf`
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* Refers to identifiers used in RDF.
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%%ANKI
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Basic
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What is the standard `xsd` namespace an acronym for?
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Back: **X**ML **S**chema **D**efinition.
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Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
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<!--ID: 1722340624986-->
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END%%
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%%ANKI
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Basic
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What is the standard `xmlns` namespace an acronym for?
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Back: **XML** **N**ame**s**pace.
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Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
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<!--ID: 1722340624991-->
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END%%
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%%ANKI
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Basic
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What is the standard `rdf` namespace an acronym for?
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Back: **R**esource **D**escription **F**ramework.
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Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
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<!--ID: 1722340624996-->
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END%%
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## Bibliography
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* Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020. |