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Notation3, or N3 as it is more commonly known, is a shorthand non-
XML Extensible Markup Language (XML) is a markup language and file format for storing, transmitting, and reconstructing arbitrary data. It defines a set of rules for encoding documents in a format that is both human-readable and machine-readable. T ...
serialization of
Resource Description Framework The Resource Description Framework (RDF) is a World Wide Web Consortium (W3C) standard originally designed as a data model for metadata. It has come to be used as a general method for description and exchange of graph data. RDF provides a variety of ...
models, designed with human-readability in mind: N3 is much more compact and readable than XML RDF notation. The format is being developed by
Tim Berners-Lee Sir Timothy John Berners-Lee (born 8 June 1955), also known as TimBL, is an English computer scientist best known as the inventor of the World Wide Web. He is a Professorial Fellow of Computer Science at the University of Oxford and a profes ...
and others from the Semantic Web community. A formalization of the logic underlying N3 was published by Berners-Lee and others in 2008. N3 has several features that go beyond a serialization for RDF models, such as support for RDF-based rules.
Turtle Turtles are an order of reptiles known as Testudines, characterized by a special shell developed mainly from their ribs. Modern turtles are divided into two major groups, the Pleurodira (side necked turtles) and Cryptodira (hidden necked t ...
is a simplified, RDF-only subset of N3.


Examples

The following is an RDF model in standard XML notation: Tony Benn Wikipedia may be written in Notation3 like this: @prefix dc: . dc:title "Tony Benn"; dc:publisher "Wikipedia". This N3 code above would also be in valid
Turtle Turtles are an order of reptiles known as Testudines, characterized by a special shell developed mainly from their ribs. Modern turtles are divided into two major groups, the Pleurodira (side necked turtles) and Cryptodira (hidden necked t ...
syntax.


Comparison of Notation3, Turtle, and N-Triples


See also

*
N-Triples N-Triples is a format for storing and transmitting data. It is a line-based, plain text serialisation format for RDF (Resource Description Framework) graphs, and a subset of the Turtle (Terse RDF Triple Language) format. N-Triples should not be ...
*
Turtle (syntax) In computing, Terse RDF Triple Language (Turtle) is a syntax and file format for expressing data in the Resource Description Framework (RDF) data model. Turtle syntax is similar to that of SPARQL, an RDF query language. It is a common data format ...


External links


Notation 3 W3C Submission
on '' W3C Design Issues'' by Tim Berners-Lee
Notation 3 Primer
''Getting into RDF & Semantic Web using N3''
A Rough Guide to Notation3An editing mode of N3 for vimAn editing mode of N3 for textmateEulerGUI
an IDE centered on N3 editor with translation from RDF, with validation, prefix management, uploading of resources, graph view, table view, etc.


References

{{Reflist Resource Description Framework Computer file formats