This might be a very stupid question, but it's been slowing my process for a while now.
Here I have two tables : (same name == same property)
The main difference is that I can put B_Items in A_items. That gives A_items a few more attributes that should not be allowed to B_items.
Is two table really the way to go with such similar tables or is there a better way to structure my db? (Thinking about the employee manager example)