I think there are two types of database design questions. There is the actual questions such as "I'm trying to work out a database design for ...." and very nit picky questions of "I have this database design and I was wondering what you guys think about it". The later will result mostly in opinions and not really a useful entry in a Q&A forum.
E.g. Can Anyone please review my database after I did the Normalization ?.Any suggestion is appreciated
It is hard to give a definite answer to the question asked. Hence so far there are only comments. That's really what the person is after when asking this question - he wants input from others so he can make his final decision, so you will see mostly comments as answer, since it's not really a question.
The question being "can anyone please review.." the answer is "Yes" or "No" :)
So I think that type of question does not belong.
But there has been other good database design questions too which I think would belong as they provide good data for others to use in the future.
Is it important to design the database the right way from the beginning?
Best design for a many:many relationship issue