What is referential integrity rule? a. Primary keys cannot be null. b. Foreign keys cannot be null.
Question:
What is referential integrity rule?
a. Primary keys cannot be null.
b. Foreign keys cannot be null.
c. The data values of a forging key always exist in the corresponding table.
d. Foreign keys could be null.
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The correct answer is b Foreign keys cannot be null The referential integrity rule states that forei...View the full answer
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Related Book For 
Accounting Information Systems
ISBN: 9781260571080
3rd International Edition
Authors: Vernon Richardson
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