[Info-vax] Should Oracle buy OpenVMS?

[Christopher]

On Apr 23, 8:10 pm, billg... at cs.uofs.edu (Bill Gunshannon) wrote:
> In article <49efc743$0$90271$14726... at news.sunsite.dk>,
>         Arne Vajhøj <a... at vajhoej.dk> writes:
>
> > Bill Gunshannon wrote:
> >> In article <49ee7768$0$90272$14726... at news.sunsite.dk>,
> >>        Arne Vajhøj <a... at vajhoej.dk> writes:
> >>> Alan Winston - SSRL Central Computing wrote:
> >>>> I'd heard it was pushing up into the high-end web space, although presumably
> >>>> more for things like high-speed display of data (news aggregation, etc) than
> >>>> for transaction-dependent things directly involving money.
> >>> MySQL show up a lot pf places. It is actually an OK database.
>
> >> Database experts would likely disagree.  Thankfully, we dropped it here
> >> in favor of Postgres.  Specifically because it lacked certain features
> >> of real databases that needed to be taught and couldn't with MySQL.
>
> > What features?
>
> I am not a database expert so I could be wrong but one thing that I
> seem to remember was someting called "constraints"  and some kind of
> "integrity".  There were a number of things that real databases had
> that MySQL not only didn't have but had no intention of adding.


MySQL was not ACID compliant.  Updates may have been atomic and
isolated, but they were not consistent or durable.  Oracle fixed this
by providing the InnoDB backend, but it is significantly slower than
the MYISAM backend.  MySQL is essentially a read-only database server
when used with MyISAM.