In a Database Containing (Among Others) Six Relations-VENDORS, PURCHASE_REQUISITIONS, PURCHASE_ORDERS

question 88

Multiple Choice

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

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Definitions:

Fixed Component

The portion of a cost or expense that remains constant regardless of changes in the volume of goods or services produced or sold.

Dependent Variable

A variable that responds to some causal factor; total cost is the dependent variable, as represented by the letter Y, in the equation Y = a + bX.

Fixed Cost

Costs that do not change with the level of production or sales, such as rent or salaries.

Total Expense

The sum of all costs and expenses associated with the operations of a business.