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# RDF Cheatsheet

## Unique Features
- Data model for representing information in a machine-readable format
- Based on subject-predicate-object triples
- Supports linking data across different sources and domains
- Widely used in the semantic web and linked data applications
- Can be queried using SPARQL

## Triples

subject predicate object

## Namespaces

@prefix prefix_name: <namespace_URI> .

## Blank Nodes

_:blank_node_name

## Literals

"literal_value"

"literal_value"^^<datatype_URI>

## RDF Collections

( item1 item2 item3 )

## RDF Lists

rdf:List rdf:first item1 ; rdf:rest rdf:nil .

rdf:List rdf:first item1 ; rdf:rest [ rdf:first item2 ; rdf:rest rdf:nil ] .

## RDF Schema

rdfs:Class

rdfs:subClassOf

rdfs:subPropertyOf

rdfs:domain

rdfs:range

## Ontologies

owl:Ontology

owl:imports

owl:Class

owl:ObjectProperty

owl:DatatypeProperty

owl:inverseOf

owl:TransitiveProperty

## Resources
- [RDF 1.1 Primer](https://www.w3.org/TR/rdf11-primer/)
- [RDFLib](https://rdflib.readthedocs.io/) (Python library for working with RDF)
- [Apache Jena](https://jena.apache.org/) (Java framework for working with RDF and SPARQL)
- [TopBraid Composer](https://www.topquadrant.com/products/topbraid-composer/) (ontology editor and development environment)