Magento – mysql PHP scripts can run again

Should it happen, that create an extension of a database table or not there are several, where they should be, you would have to let the script run again, which writes the necessary data. Often these are in the folder app / code /[community oder local]/[Extensionprogrammierer]/[Extensionname]/sql/[extension]_setup and have such names such as mysql4-install-0.1.0.php oder mysql4-upgrade-0.1.0-0.1.1.php To run the script again…