Hi , i''m looking for db import from external xml file , which method is usual for this process , should i create new xml file (using rexml) for arrange them or import directly to my db . i''ll work about 4 or 5 external xml data (every xml file has different xml scheme) and integrate(create new , delete or update price of existing one ) every 3 hours in my db then show in my site. Thanks for your suggestions.