SubClassOf vs Child Element

Dear,

May I ask an elementary question?

I don't understand the difference between [SubClassOf or SubPropertyOf] and Child Element structure.

For example, do the followings mean same, or not?



---------------------------
ex1)
---------------------------

 <rdfs:Property  rdf:ID="connected_to" > 
        <rdfs:subPropertyOf rdf:resource="#Space"/> 
        <rdfs:domain rdf:resource="#Space"/>
        <rdfs:range rdf:resource="#Space"/>
 </rdfs:Property> 

 <rdfs:Property rdf:ID="connected_type" />
        <rdfs:subPropertyOf rdf:resource="#connected_to"/> 
 </rdfs:Property> 


---------------------------
ex2)
---------------------------

 <rdfs:Property  rdf:ID="connected_to" > 
        <rdfs:subPropertyOf rdf:resource="#Space"/> 
        <rdfs:domain rdf:resource="#Space"/>
        <rdfs:range rdf:resource="#Space"/>
         <rdfs:Property rdf:ID="connected_type" />
 </rdfs:Property> 






        Jie-Eun Hwang 
--------------------------------------------------------------------------
      M.S. Candidate in Dept. of Housing & Interior Design, Yonsei University
      CAAD Research Group ARCHMEDIA 
      http://www.spacespectrum.net | curiozen@yonsei.ac.kr | +82-2-2123-3137 | +82-11-707-9994