Re: More on lists and sets

"Jon Heggland" <jon.heggland_at_idi.ntnu.no> wrote in message news:dvufg0$p8v$1_at_orkan.itea.ntnu.no...

> I honestly can't see what this has to do with database theory and
> (sub)languages; or with lists versus sets versus bags. It's a user
> interface issue, isn't it? Why do you need a special language for this?
>

I think the user (program) interface to databases is at the heart of database theory. You do mean that the user of a database is a program, don't you?

What's the difference between physical data independence and logical data independence, anyway?
It's about the interface, right?

> > But it's not very easy from a programming perspective. And programmers
> > would be more productive if it were easy.
>
> It is *very* easy in Dataphor. Just put "embedded" tags on the two
> foreign key definitions.

I'm glad to hear you say this. The more I hear about Dataphor the more I think that the things I used to like in Datatrieve are covered by features in Dataphor. And I'm assuming that, some 30 years later, Datphor has some things that Datatrieve never dreamed of.

Thanks for including this comment. If Dataphor indeed does what I want, then I can stop thinking about it. Received on Thu Mar 23 2006 - 13:06:13 CST