I don't understand the logic here
It seams the one-to-one and one-to-many relationships don't follow the same logic in these two pictures. why?
1 answers ( 0 marked as helpful)
Hi Ramsey!
Thanks for reaching out.
A customer may purchase many products, but a particular product is linked to only one customer. Later, in the lecture the cardinanality constraints are added. So, please watch the whole lecture. Thank you.
Hope this helps.
Best,
Tsvetelin