To receive a residence permit you need to prove that you are, to some degree, in control of the German language. In order to do so, you will want to pass an exam, the GOETHE-ZERTIFIKAT. B1 is what you need if you are aiming for the Niederlassungserlaubnis.
With Germanized on board, WooCommerce has several ways to save article numbers. Has the intern spent two days entering the EAN in the wrong field for the 3000 articles in the WooCommerce online shop? Then an SQL superhero has to save the day who can copy content from one field to another in no time.