Instantiation

Hi Frank,

 

I have a question about the RDF Primer:

 

If I look at:

Example 2: RDF/XML for the Web Page's Creation Date 

1. <?xml version="1.0"?>

2. <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"

3.             xmlns:exterms="http://www.example.org/terms/">

 

4.   <rdf:Description rdf:about="http://www.example.org/index.html">

5.       <exterms:creation-date>August 16, 1999</exterms:creation-date>

6.   </rdf:Description>

 

7. </rdf:RDF>

 

then I wonder whether:

-         this implies the instantiation ("putting it on the map") of that
thing

-         one can use rdf:about when it is not accompanied by a statement,
now or earlier or imported, with rdf:ID that instantiates it

-         if that is not required, one may write the lines 4-6 as:

 

4.   <rdf:Description rdf:ID="index">

5.       <exterms:creation-date>August 16, 1999</exterms:creation-date>

6.   </rdf:Description>

 

Regards,

Hans

_______________________ 

Hans Teijgeler

ISO 15926 specialist

 <http://www.InfowebML.ws> www.InfowebML.ws

 <mailto:hans.teijgeler@quicknet.nl> hans.teijgeler@quicknet.nl

phone +31-72-509 2005