Turtle difference between @base and empty prefix

Question

In RDF-Turtle , what is the difference between using a prefix @baseand an empty prefix (only with :)?

Answer 1

@basenot a prefix declaration, but ... well, a basic declaration. It announces the location of the document base against which all relative IRIs are allowed. @prefix :- This is a prefix declaration (in this case for the default or empty prefix), against which all prefix names with an empty prefix are allowed.

Although both methods write IRI, relative IRI is not the same as a prefix name. They follow various syntax rules.

:

@base <http://example.org/base/> 
@prefix : <http://example.org/prefix/> 

<name> rdf:type rdf:Property .
:phone rdf:type rdf:Property .

name IRI. IRI http://example.org/base/name.

:phone IRI, ( ). () IRI http://example.org/prefix/phone.

IRI Turtle: <> .