WordNet 2.0 database is almost ready. Thanks to John Kane for the import programs. You could download the generated SQL files from here if you would like to experiment with them yourself. The database itself contains a lot of information other than just the word, definition, type and usage. I am still working on what information needs to be made available. Performance from the database will also be an interesting thing to watch as now this will query multiple tables (All the other dictionaries were just simple 1 table queries).

Here is an E-R diagram after the import was done. All the wordnet experts out there please validate if i did this correctly.