Hello, I tried to translate a small database schema to an ontology model (following some mapping rules). However I guess the process would be more complex to do with a big and more constrained relational database. My question is not specific to Postgresql, But I thought more people in this list are expert about databases :) So, my question, what are the main problems of big relational databases that will be hard to map into another things (cause in my case "to ontologies" I don't want to lose useful information & constraints ..and so on.. ).
Regards, Yitaru
