One Important Constraint in a Relational Database Environment Is That

question 38

Multiple Choice

One important constraint in a relational database environment is that a primary key uniquely identifies each row in a data table.This principle is called the

• A)entity integrity rule.
• B)referential integrity rule.
• C)unique primary key rule.
• D)foreign key rule.

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Definitions:

Selling Price

The amount of money charged to the buyer for a product or service, typically set above the cost to include a profit margin.

Credit Terms

The conditions under which a seller will extend credit to a buyer, including the repayment period, interest rate, and the amount of payment.

Net 20

A payment term indicating that the full payment is due within 20 days from the invoice date.

2/10

A common trade credit term indicating a 2% discount if payment is made within 10 days; otherwise, the full amount is due in 30 days.