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user manual

Abstract

A little manual to help you doing what you want to.

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File
RDF Schema
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Create a new RDF Schema (empty)
Open File
Open an existing RDF Schema
RDF
New File
Create a RDF (without any shema)
Open File
Open an RDF (without any shema)
New File with RDF Schema(s)
Create a RDF with the possibility to use existing schema(s)
Open File
Open an RDF with the possibility to use existing schema(s)
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About
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RDF

RDF are triple (predicat, object, subject). A RDF file is a graph, a lot of tripl connecting togheter. It's the root of Semantic Web.

More informations

W3C : RDF/XML
http://www.w3.org/TR/rdf-syntax-grammar/

RDF Schema

A schema is used to define a graph. Which type of element exists and which properties they have.

Example

<?xml version="1.0" encoding="utf-8"?>
<rdf:RDF
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
    xml:base="http://www.example.org">
<rdfs:Class rdf:ID="Animal">
  <rdfs:label>Animal</rdfs:label>
  <rdfs:comment>An animal</rdfs:comment>
</rdfs:Class>

<rdfs:Property rdf:ID="eat">
  <rdfs:comment>What does it eat ?</rdfs:comment>
  <rdfs:domain rdf:resource="#Animal" />>
  <rdfs:range rdf:resource="http://www.w3.org/2000/10/XMLSchema#string" />
</rdfs:Property>
</rdf:RDF>

Above you have an animal who eats something. This is very trivial. Now you can extend the animal class to set (for example) : birds, reptiles, humans, ... and add properties to subclasses to specialize them.

More informations

W3C : RDF Schema
http://w3.org/TR/rdf-schema/