Sources and sinks are internal to the system
Indicate whether the statement is true or false
FALSE
Explanation: A source/sink is the origin and/or destination of the data. Source/ sinks are sometimes referred to as external entities because they are outside the system.
CL
Business
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Subtype entities contain, apart from the identifier, only attributes that do not appear in the supertype
Indicate whether the statement is true or false
Business
Credit card companies make a profit in all the following ways except by
A) collecting fees for cash advances, balance transfers, and late payments. B) collecting fees from stores for accepting credit card transactions. C) collecting fees for processing new cardholder applications. D) collecting finance charges on any unpaid balances or cash advances.
Business