Test data generator

Question

hi,
I am developing a utility which will generate random data. these data will be filled in relational tables which can be later used for testing purposes.
Currently I am stuck how to generate random meaningfull data. Suppose we have a table named 'product'(product_id,product_name,product_description) in database and my utility needs to fill the table with meaningfull random generated data.Can anybody tell how to solve this. If you want you can give me the logic also !