Which of the following is not a basic requirement of a relational database? a. Primary keys cannot

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Which of the following is not a basic requirement of a relational database?

a. Primary keys cannot be null.

b. Every column in a row must be single valued

c. Foreign keys cannot be null.

d. All non-key attributes in a table must describe a characteristic of the object identified by the primary key.


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Accounting Information Systems

ISBN: 9781292060521

13th Global Edition

Authors: Marshall B. Romney, Paul John Steinbart

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