MySQL Forums
Forum List  »  Newbie

Re: Primary key for referee table.
Posted by: Martin Palenik
Date: November 30, 2010 10:36AM

That looks great. Just one more thing. That performance problems you talk about, what is their origin?

a>overhead with compound UNIQUE NOT NULL candidate key uniqueness enforcement (e.g. with each INSERT operation it has to check all the attributes of the key for uniqueness)

b>overhead with foreign key constraints

Options: ReplyQuote


Subject
Written By
Posted
Re: Primary key for referee table.
November 30, 2010 10:36AM


Sorry, you can't reply to this topic. It has been closed.

Content reproduced on this site is the property of the respective copyright holders. It is not reviewed in advance by Oracle and does not necessarily represent the opinion of Oracle or any other party.