The "_____" Characteristic of a Primary Key States That the Primary

question 43

Multiple Choice

The "_____" characteristic of a primary key states that the primary key must uniquely identify each entity instance, must be able to guarantee unique values, and must not contain nulls.

• A) unique values
• B) nonintelligent
• C) preferably single-attribute
• D) security-complaint

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Definitions:

Payback Period

The amount of time it takes for an investment to generate an amount of income or cash equivalent to the cost of the investment.

Discount Rate

The interest rate used to determine the present value of future cash flows, guiding investment and financing decisions by reflecting the opportunity cost of capital.

NPV

An abbreviation for Net Present Value, it assesses the worth of future cash flows in today's dollars, subtracting the initial investment.

PI

A mathematical constant representing the ratio of a circle's circumference to its diameter, approximately 3.14159.