Re: What databases have taught me

Keith H Duggar wrote:
>
> all functions operating on a given data type are part of the
> /definition/ of that data type, doesn't seem useful, at
> least in a programming context. Why are we not free to
> choose which operations /define/ a data type and which are
> merely /auxiliary/ or /derived/. How is it useful to think
> that anytime we define functions we are redefining the types
> of it's arguments?

I too have this question. What is the utility? What is gained, or what would be lost if we didn't do this?

Marshall Received on Sat Jul 01 2006 - 01:42:34 CEST