Sample Description This article and accompanying sample demonstrates how to use Portlet Factory Version 6.1.2 and later to localize portlets using content from a database or some other back-end server. It is intended for developers writing portlets that must support multiple languages where the language translations are not stored as traditional file-based resource bundles.
Read the full article here:
Db Resource Bundles Sample.pdf Download 
Download the sample from here: db_resource_bundles.zip