Question and answer
What are some issues when working with a many-to-many relationship? Provide some examples.
Many-to-Many relationships in an entity relationship diagram tend to conceal areas of poor understanding, and in fact some databases will not allow you to create such relationships. Almost always, a Many-to-Many relationship conceals a hidden entity. [ For this reason, identifying and adding the hidden entity to the model eliminates Many-to-Many relationships. This usually ends up with an extra
entity being added, which then has a One-to-Many relationship with the existing entity. ]
Expert answered|majasalv17|Points 0|
Question
Asked 6/5/2013 1:23:38 AM
0 Answers/Comments
Get an answer
New answers
Rating

There are no new answers.

Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
17,203,931 questions answered
Popular Conversations
1. Write using exponents. (–4)(–4)
Weegy: Hi! (-4)(-4) is equal to (-4)^2 User: Simplify. Show your work. 5 1/3 +(-3 9/18) Weegy: 5 1/3 +(-3 9/18) ...
9/2/2014 6:06:05 PM| 4 Answers
Consider this quote: "In each of these historical instances . . . ...
Weegy: D. it stands for the omission of only a single word. User: Which of the following statements correctly ...
9/1/2014 8:30:28 AM| 2 Answers
The invasion of this region temporarily halted the fighting between ...
Weegy: The invasion of A.Korea halted the the fighting between the KMT and CPC. User: The letters DMZ stand for ...
9/1/2014 3:12:20 PM| 2 Answers
what is a complex sentence
Weegy: User: what is a simple sentence Weegy: User: what is a compound sentence Weegy: A compound sentence ...
9/1/2014 5:04:39 PM| 2 Answers
Every set of three points is coplanar.
9/1/2014 7:59:14 PM| 2 Answers
Weegy Stuff
S
L
1
L
P
C
1
Points 224 [Total 6757]| Ratings 0| Comments 224| Invitations 0|Offline
S
R
L
1
1
P
C
1
P
1
1
L
P
C
P
C
1
P
C
L
P
C
1
P
C
P
C
P
C
Points 222 [Total 24621]| Ratings 0| Comments 222| Invitations 0|Offline
S
L
C
P
C
1
L
L
P
C
1
Points 182 [Total 16121]| Ratings 1| Comments 172| Invitations 0|Online
S
L
1
1
1
1
L
1
Points 149 [Total 9929]| Ratings 0| Comments 149| Invitations 0|Offline
S
L
P
C
L
P
C
P
C
L
P
C
P
C
P
C
Points 116 [Total 17288]| Ratings 0| Comments 116| Invitations 0|Offline
S
L
P
C
P
C
1
L
P
C
L
P
C
P
C
P
C
P
C
Points 76 [Total 18607]| Ratings 0| Comments 76| Invitations 0|Online
S
1
L
1
L
P
P
L
Points 52 [Total 11298]| Ratings 0| Comments 52| Invitations 0|Online
S
1
L
L
Points 48 [Total 5172]| Ratings 0| Comments 48| Invitations 0|Online
S
Points 33 [Total 703]| Ratings 0| Comments 33| Invitations 0|Offline
S
P
C
L
P
L
1
Points 24 [Total 6081]| Ratings 1| Comments 14| Invitations 0|Offline
Home | Contact | Blog | About | Terms | Privacy | Social | ©2014 Purple Inc.