Question

Is this Showroom table correct? I want to be able to see this data:

I’m just not sure how to reference MakeName, ModelName and Price in the showroom table, is it right as it is or do I need to change something?

Answer 1

You don’t want to have those fields in your ShowRoom table (unless that’s just a View). Keep that table to your Id and your CarId. Then you can use INNER JOINs to return the appropriate data:

SELECT S.ShowRoomId, S.CarId, M.MakeName, Mo.ModelName, Mo.Price
FROM ShowRoom S
   INNER JOIN Car C ON S.CarId = C.CarId
   INNER JOIN Model Mo ON C.ModelId = Mo.ModelId
   INNER JOIN Make M ON Mo.MakeId = M.MakeId

Good luck.