Re: Checking a relation in BCNF for MVDs
From: Mikito Harakiri <mikharakiri_at_yahoo.com>
Date: 6 Jan 2003 11:53:06 -0800
Message-ID: <bdf69bdf.0301061153.7def85af_at_posting.google.com>
Date: 6 Jan 2003 11:53:06 -0800
Message-ID: <bdf69bdf.0301061153.7def85af_at_posting.google.com>
Sebastian <space_cadet_at_gmx.de> wrote in message news:<1103_1041809347_at_news.cable.ntlworld.com>...
> Hi,
>
> I give up. I need a guru to answer this, believe me I have spent hours and hours
> reading books and browsing endless uni websites. Maybe I'm just too dumb. The
> question seems simple enough.
>
> Let us say there is a relation rel(attr1, attr2, attr3, attr4). It is an all-key
> relation and for that reason we know it is in BCNF.
What "all-key relation" means? (Google didn't answer that:-(. Is it a relation in which every column is a unique key, or is it a relation where the composite key <attr1, attr2, attr3, attr4> is the minimal unique key? Received on Mon Jan 06 2003 - 20:53:06 CET