Re: RFC : Correcting some problems in rounding/number handling

[Richard Wackerbarth]

On Thu, 06 Jul 2000, Shimpei Yamashita wrote:

> > 2) If you assume that all of the denominators for a given currency are
> > the same, you have not really gained anything by storing them repeatedly.
> > And you have introduced an additional possibility of error trying to
> > enforce the assertion that they are the same.
>
> True; however, this is a problem with the rational number representation
> scheme, not the RDBM paradigm.

I thought that was the topic. Integer, or other "native" representation VS 
rational representation.

> You still have to decide at some point
> whether you're going to assume all the denominators for a currency is
> going to be the same,

By the rules of commerce, it virtually must be. Certainly within one ledger, 
it will be. No accountant in his right mind would accept ($ 8 3/4) in the 
same ledger with ($1.99)

> and the moment you make that decision, you're going
> to run the risk of either wasting space or committing an error.

There is no question of the "space" part of it. You are wasting space by 
storing duplicate information.

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