Thank you very much for your explantions, i will take care before using the script on a site in production. I'm not sure that all the stuff around my site will be compliant with your script, but anyway, it will certainly help me to understand how the prestashop database is working. I have studied solutions like database browser : "http://www.dbsoftlab.com/Freeware/Database-Browser.html" directly in my local hosted site, but i'am always frightened to change data that are linked in other table, and then make my data base un consistant. I have opened the AminImport.php file that handle the CSV import tabs, it's a complex file not easy to tweak. So, i will try to improve the process with your script, thanks a lot.