Semantic Web Technologies
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Fig. 3 A semantic web stack
• Rule Interchange Format (RIF), a system of web rule language dialects enabling
interchange of rules on the Web.
The semantic web stack layers are as follows:
• Syntax Layer
• RDF(s) Layer
• Ontology Layer
• Logical Layer
• Proof and trust Layer
To the base, we get XML in the syntax layer.
• XML—It provides syntactical structure of content elements. No semantics is
associated with it.
• XML Schema—Structure and contents of XML documents are provided and
restricted by XML Schema.
RDF and RDF Schema are part of RDF layer.
• RDF-Using RDF web resources and their relationships are represented as data
models. RDF/XML, N3, Turtle, and RDFa etc. are for representation. Most basic
standard of the Semantic Web is RDF.