An e-commerce system manages “Orders” and “Order Items”. Eac…
An e-commerce system manages “Orders” and “Order Items”. Each “Order Item” is a specific product within an “Order”. An “Order Item” can exist only if there is a corresponding “Order”. The relationship between “Orders” and “Order Items” is:
Read DetailsAn online store database manages “Customers” and “Product Re…
An online store database manages “Customers” and “Product Reviews”. A “Customer” can write multiple “Product Reviews”, and a “Product Review” is associated with a “Customer”. However, a “Product Review” can be uniquely identified without needing to know the “Customer” details, and a customer can exist without any reviews. The relationship between “Customers” and “Product Reviews” is:
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