-No two books in the database:
A) May have the same publisher
B) May have been written by the same author
C) May have the same title
D) All of the above

Question

-No two books in the database:
A) May have the same publisher 
B) May have been written by the same author 
C) May have the same title 
D) All of the above

Quizplus · Accepted Answer

Books in a database can have the same publisher or be written by the same author, but having the same title could lead to confusion and is often restricted to ensure each book is uniquely identifiable.

-No Two Books in the Database