Which of the following is a correct statement about foreign keys? a. All foreign keys cannot not

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Which of the following is a correct statement about foreign keys?
a. All foreign keys cannot not be blank (null).
b. Most foreign keys should not have any data values.
c. A foreign key must be another table’s primary key.
d. An attribute cannot be a foreign key used in different tables.

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Accounting Information Systems

ISBN: 9781260571080

3rd International Edition

Authors: Vernon Richardson

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