[rucksack-devel] Re: Rucksack, ECLM

[Arthur Lemmens]

Marco wrote:

> this is the isolation part. the consistency part is generally used
> when talking about foreign key references

Ah, right.

> which i don't think really apply to rucksack (except for the
> constraint that if object A has a reference to object B then
> B must exist).

In Rucksack, it's impossible for A to have a reference to B if B
does not exist.

> however i disagree with "They should have the same effect as if the
> oldest transaction has started and completed its job before all
> younger transactions" i believe it should read:
>
> "They should have the same effect as if all the operations happend in
> the same instant as the commits

That's not the approach I've taken (see my answer to Nikodemus in
http://common-lisp.net/pipermail/rucksack-devel/2006-May/000001.html),
but maybe the approach you describe is better.  I need to think about
the consequences.

I'll reply to the rest of your message later.

Arthur