What Kind of Relationship is Between These Tables?

Question

I have two tables that have foreign keys to each other\'s primary key. This DB is in French. I will translate the two tables that I want to you to understand.

Answer 1

IMHO, this "key exchange" is plainly wrong; from the sample data we may conjecture (but not for sure!) that the relationship between [ATELIER CUISINE] and [CUISINER] is one-to-many (CUISINIER table), in which case the [ATELIER CUSINE] should NOT have the NumCuisinier column, or otherwise NumCuisine is not a Primary Key (which, according to the data model, is)! So the data model is probably wrong.

My best bet for your query would be

SELECT B.*, A.TelCuisine
FROM [ATELIER CUISINE] A INNER JOIN CUISINIER B ON A.NumCuisine = B.NumCuisine

Unless of course NumCuisinier in [ATELIER CUISINIER] table is NOT a FK, as @marcothesane suggests and it has a completely different meaning, in which case it should be contained in the result set (but with a different alias):

SELECT B.*, A.TelCuisine, A.NumCuisinier as [HeadChef]
FROM [ATELIER CUISINE] A INNER JOIN CUISINIER B ON A.NumCuisine = B.NumCuisine