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From: Ron Johnson <[email protected]>
To: 'pgsql general' <[email protected]>
Subject: Re: Notes on converting from MySQL 5.0.x to PostgreSQL
Date: Fri, 30 Jun 2006 11:23:53 -0500
Message-ID: <[email protected]> (raw)
In-Reply-To: <002001c69c5b$75d33210$10d09888@parzifal>
References: <002001c69c5b$75d33210$10d09888@parzifal>

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paul rivers wrote:
> Out of curiosity, which "big, expensive enterprise database" are
> you spoiled by? Many that I support do not allow DDL within an
> transaction, or if they allow it, there are many caveats and
> rules.

Oracle Rdb.  Built by DEC back in the early 1980s.  It's had
tablespaces (Storage Areas in Rdb parlance) since the late 80s.

Tables (including the system catalog, which itself is a set of
tables) all go in a Storage Area.  If you don't specify one, it does
in the default: RDB$SYSTEM.

Creating a table is no more than inserting records into a few system
tables, and allocating a few pages in the relevant Storage Area.
Thus, rolling back most all DDL is built deep into the engine.

http://www.oracle.com/technology/products/rdb/index.html

- --
Ron Johnson, Jr.
Jefferson LA  USA

Is "common sense" really valid?
For example, it is "common sense" to white-power racists that
whites are superior to blacks, and that those with brown skins
are mud people.
However, that "common sense" is obviously wrong.
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