ER Modeling I - Q3

CUSTOMER (CustomerID, …)

INVOICE (InvoiceID, CustomerID, SalesRepID,…)

LINE (InvoiceID, LineID, ProdID,…)

PRODUCT (ProductID, …)

SALESREP (SalesRepID, …)

VENDOR (VendorID,…)

SHIP (ShipID, ProductID, VendorID,…)

All foreign keys not null

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