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 Science-Related Homework Help Computer Studies
New Topic  
Raspberry Raspberry
wrote...
Go to Answer
Posts: 3294
Rep: 10 0
7 years ago
The entity integrity rule states that:
A) referential integrity must be maintained across all entities.
B) no primary key attribute can be null.
C) a primary key must have only one attribute.
D) each entity must have a primary key.
Textbook 
Modern Database Management

Modern Database Management


Edition: 12th
Authors:
Read 241 times
3 Replies
Replies
Answer verified by a subject expert
dorkalotdorkalot
wrote...
#1
Top Poster
Posts: 3288
Rep: 28 0
7 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

Raspberry Author
wrote...
#2
7 years ago
And right on time, exam is this Tuesday Frowning Face
wrote...
#3
7 years ago
Nerd Face
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1305 People Browsing
 123 Signed Up Today
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 692
  
 137
  
 511
Your Opinion
What's your favorite coffee beverage?
Votes: 274
Previous poll results: Which industry do you think artificial intelligence (AI) will impact the most?