CENTRAL SCHOOL LIBRARY Observe the ER Diagram for the CENTRAL SCHOOL LIBRARY

question 83

Multiple Choice

CENTRAL SCHOOL LIBRARY
Observe the ER diagram for the CENTRAL SCHOOL LIBRARY

-How many columns will the relation COPY have in the relational schema mapped from the Central School Library ER diagram?

• A)2
• B)3
• C)4

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Definitions:

Quantity Sold

The total number of units of a product or service purchased by customers over a specified period.

Tax

A compulsory financial charge or some other type of levy imposed upon a taxpayer by a governmental organization.

Consumer Surplus

The imbalance between the total budget consumers are willing to allocate for a product or service and the actual spending.

Consumer Surplus

The separation between the ideal amount consumers are willing to spend on a service or product and their real expenditures.