> On 1/19/06, Pollard, Mike <[EMAIL PROTECTED]> wrote: >> Martijn van Oosterhout wrote: >> >> > Please provides natural keys for any of the following: >> > >> > - A Person >> > - A phone call: (from,to,date,time,duration) is not enough >> > - A physical address >> > - A phone line: (phone numbers arn't unique over time) >> > - An internet account: (usernames not unique over time either) >> >> Ahh, a challenge. Hmm, not sure about all of them, but here goes: >> >> A Person - well, you could use a bit map of their fingerprints, or maybe >> their retinal scan. Of course, that could change due to serious injury. >> Maybe some kind of representation of their DNA? > > Unless the person in question happens to be a chimera (yes, they do exist). > > ;-)
Yeah, I saw that episode of CSI! :-) -- "cbbrowne","@","gmail.com" http://linuxdatabases.info/info/lsf.html "Cat's motto: No matter what you've done wrong, always try to make it look like the dog did it." -- Unknown ---------------------------(end of broadcast)--------------------------- TIP 6: explain analyze is your friend
