On Sat, Sep 30, 2006 at 11:36:04AM -0400, Xiaofeng Zhao wrote: > >I feel silly for even mentioning this, but there are less than 256 > >countries in the UN, and as far as I know, each has at most one > >currency, so you could use 8 bits instead of 15. > > > That's not always true, e.g. China has RMB and HKD. Also Taiwan is > not a member country of UN but I don't think one would exclude TWD.
Right. There are several countries whose currency is USD, so I still contend that at any given instant, there are fewer than 256 currencies, so we're back to 8 bits. > There'll also times a country may transit from one currency to > another. Even a currency (currency of most continental European > countries before Euro) is no more being used, it may still need to > be supported. The "money" type is far too simplistic to model this kind of thing. A really sophisticated representation of money would have to take time, inflation/deflation, pairwise exchange rates, etc. into account. It would look more like a schema with a large data set and a large body of code loaded into it than it would a data type. Cheers, D -- David Fetter <[EMAIL PROTECTED]> http://fetter.org/ phone: +1 415 235 3778 AIM: dfetter666 Skype: davidfetter Remember to vote! ---------------------------(end of broadcast)--------------------------- TIP 5: don't forget to increase your free space map settings