Library based on RDF

Hi,

I'm working on a portal with a module 'Library'. In this library you can store 
your documents, photos etc. The library is based on a semantic network which 
is based on RDF. The semantic network acts like an intelligent index for all 
information.

The information is stored in a MySQL database with rows ( identifier, 
subject , predicate , object ). The index can be created from an OWL- 
ontology .

Also I'm creating `agents` for filling the database. These agents take a look 
at some attributes of files, but also in files searching for special tags.

This together makes it possible to search intelligent through your 
information.

Is this a good approach of using RDF and ontologies?? Please give me your 
opinion.

Henk