What are the 4 biggest differences between the first and sec

What are the 4 biggest differences between the first and second ER model below?

Solution

1.In first one have releation between partener and sales person,but in second one relation between purchasge and others.

2.in first one There is no relartion between partner and product but it have second one.

3.quantity will check by partner in second one thre no checking in first one.

4.order unit price check by second one there is no in first one.

5.having managers involment in second one but in first one we have supervise involment