Table kk_wishlist_item mistake

[fjbarrena]

Hi all !

We're studying konakart's database relationships, and we don't understand the field: products_id (varchar) in KK_WISHLIST_ITEM table.

products_id field (in KK_WISHLIST_ITEM) seems references from TABLE PRODUCTS (primary key).

But products_id in table PRODUCTS has integer type, and products_id in table KK_WISHLIST_ITEM has varchar type.

In other database's tables, type of products_id field is integer, only in KK_WISHLIST_ITEM has varchar type.

¿Is it an error? ¿References to another table, and we don't see it?
If is an error, ¿throws some exception?

Thanks in advance.