Ask a Question
  
  
  
Top Posters
Since Sunday
106
100
28
15
13
13
13
12
12
12
11
11
New Topic  
wrote...
Posts: 31
Rep: 7 0
A week ago
Which of the following is not true about representing subtypes in a relational database design?

• One table is created for the supertype and one for each subtype.

• All attributes of the supertype are added to the subtype relations.

• The key of the supertype is made the key of the subtypes.

• An instance of the supertype may be related to one instance each of several subtypes.
Source  Download Study Guide
Test Bank for Database Processing: Fundamentals, Design, and Implementation
Edition: 15th
Authors:
Read 8 times
1 Reply
Replies
Answer verified by a subject expert
wrote...
Posts: 20
Rep: 6 0
A week ago
Sign in or Sign up in seconds to unlock everything on Biology Forums.
All attributes of the supertype are added to the subtype relations.
Related Topics
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers.
Learn More
Improve Grades
Help Others
Save Time
Accessible 24/7
  133 People Browsing
Related Images
 701
 191
 60
Your Opinion
What type of music do you study to?
Votes: 34