| From: | Peter Eisentraut <peter_e(at)gmx(dot)net> |
|---|---|
| To: | Martijn van Oosterhout <kleptog(at)svana(dot)org> |
| Cc: | "pgsql-general(at)postgresql(dot)org" <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: RFC: PostgreSQL and MySQL comparison. |
| Date: | 2001-08-30 21:00:26 |
| Message-ID: | Pine.LNX.4.30.0108302258070.679-100000@peter.localdomain |
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| Thread: | |
| Lists: | pgsql-general |
Martijn van Oosterhout writes:
> > By the way, PostgreSQL does support multiple storage managers; not as
> > easily today as in the early days, but that is mostly due to the fact that
> > no one ever wanted to replace the current one.
>
> Does this mean that in the 7.1 tree one could include the storage manager
> for 7.0, thus being able to read both types, or is it more complicated than
> that?
The storage manager hasn't changed in principle since 6.5. What has
changed is the system catalog structure and contents. (Recall the
pg_upgrade program that was available for 6.5->7.0 transition. It would
copy the data files right over.)
--
Peter Eisentraut peter_e(at)gmx(dot)net http://funkturm.homeip.net/~peter
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