In a database containing (among others) six relations?VENDORS, PURCHASE_REQUISITIONS, PURCHASE_ORDERS, PURCHASE_RECEIPTS, INVENTORY, and EMPLOYEES?you would expect that the attribute Vend_No (vendor number) would be the primary key in the ____ relation
a. VENDORS
b. PURCHASE_ORDERS
c. PURCHASE_RECEIPTS
d. EMPLOYEES
A
Business
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