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tlc_71111 tlc_71111
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5 years ago
Describe the reason why it is acceptable to have null foreign key, but it is unacceptable to have a null primary key. Use the concept of entity integrity rule and referential integrity rule in your answer.
Textbook 
Accounting Information Systems

Accounting Information Systems


Edition: 14th
Authors:
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Do What Makes You Come Alive
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gdchavis1gdchavis1
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