Hi,

I have a general db mapping question .I have lots of drop downs on my web page and i have stored all the data in db. All the tables for these drop downs don't have any primary key.How can i map these tables using hibernate or JPA.

I did not add any PK for these tables because the rows in these tables are not really entities , in my view all static data in these tables are value objects that don't have any identity .

How are the selected items stored in your objects?
Unless you store them by value a real ID would be helpful so you just have to save the IDs to the objects instead of strings or whatever you use.