ERD Example consider the given scenario. A product may or may not have a sale. A sale can have one or more products.Iden9fy the op9onality between the

Explanation

The optionality between product and sales: a product may or may not have a sale (0 or more sales), and a sale must have one or more products. The embedded answer 'correct option: 1…0' in option 1 indicates the correct optionality notation.