relational database ontology

Hello,

 

I an trying to create an ontology for relational databases. This is like
a meta ontology and not for any particular database. I have created an
ontology which has classes like - table, fields, records etc and certain
properties. 

My aim is to target different levels or types of data i.e. open data,
confidential data etc.

Is anyone aware of any such existing ontology with which I could verify
mine?

 

Thanks,

Prajakta