Top Posters
Since Sunday
a
5
k
5
c
5
B
5
l
5
C
4
s
4
a
4
t
4
i
4
r
4
r
4
Home Q & A Board Other Fields Homework Help Business Accounting
New Topic  
tlc_71111 tlc_71111
wrote...
Go to Answer
Posts: 507
Rep: 16 0
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:
Read 78 times
1 Reply
Do What Makes You Come Alive
Replies
Answer verified by a subject expert
gdchavis1gdchavis1
wrote...
#1
Posts: 410
Rep: 66 0
5 years ago
Sign in or Sign up in seconds to unlock everything for free
More solutions for this book are available here
1

Related Topics

tlc_71111 Author
wrote...

5 years ago
Just got PERFECT on my quiz
shangshang
wrote...

Yesterday
You make an excellent tutor!
my life
wrote...

2 hours ago
Correct Slight Smile TY
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  904 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 252
  
 508
  
 34
Your Opinion
Which industry do you think artificial intelligence (AI) will impact the most?
Votes: 352
Previous poll results: Should Ph.D.'s be addressed as doctors?