In the DB, where are the multiple categories?

[german]

I'm able to modify the category_default with the following lines, 

UPDATE ps_product_shop
SET id_category_default = 69
WHERE id_product in 
(
select id_product from ps_product_lang
WHERE name LIKE '%aire aco%'
);

However, when I check, the previous category and the new one appear together for the product. I don't know where to find the table containing all the categories for the same product. Could you help me with this?

[Knowband Plugins]

Your query is not clear but please find below the response as per my understanding.

Default category mapping of the product is saved in the product table itself. Refer to id_category_default column of product table. Other categories mapping of the product is saved in the category_product table.