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- From: Dan Brickley <Daniel.Brickley@bristol.ac.uk>
- To: Lisa Rein <firstname.lastname@example.org>
- Date: Tue, 2 Jun 1998 15:39:57 +0100 (BST)
On Tue, 2 Jun 1998, Lisa Rein wrote:
> your comments) I have a burning question --
> You mentioned that we don't have to pick such a prefix -- then please
> clarify my inquiry regarding the unique prefixes for RDF and RDF Schema
> that -- if I understand correctly -- are very much required.
> Is it an "RDF thang?"
The syntax descriptions below use the Extended Backus-Naur Form notation
as defined in section 6, Notation, of [XML] to
describe the essential RDF syntax elements.
The EBNF here is condensed for human readability; in particular, the
italicized "rdf" is used to represent a variable namespace name rather
than the more precise BNF notation "'<' NSname ':...'" and
the requirement that the property and type names in end-tags exactly match
the names in the corresponding start-tags is implied
by the XML rules.
RDF serialization syntax takes the form:
 RDF ::= '<rdf:RDF>' expression* '</rdf:RDF>'
[end of excerpt]
('rdf' in the above is italicised in the original HTML.)
At first glance this looks as if 'rdf' is hardcoded as the
namespace prefix, but I think this is just an artifact of the
convenience shorthand being adopted.
The phrase "'rdf' is used to represent a
variable namespace name" makes it pretty clear that other
prefixes could be used instead.
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