Re: [Fwd: Questions on 7.3 version for LinuxWorld]
От | Neil Conway |
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Тема | Re: [Fwd: Questions on 7.3 version for LinuxWorld] |
Дата | |
Msg-id | 1039418303.352.101.camel@tokyo обсуждение исходный текст |
Ответ на | Re: [Fwd: Questions on 7.3 version for LinuxWorld] (Justin Clift <justin@postgresql.org>) |
Ответы |
Re: [Fwd: Questions on 7.3 version for
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Список | pgsql-advocacy |
On Mon, 2002-12-09 at 02:08, Justin Clift wrote: > "In the release, Neil Conway comments that the new version contains a > dependency tracking systems "that allows PostgreSQL to safely support > many more subtle enhancements like the ability to drop columns". I'm > unclear on the use of "safely" here - would you be able to elaborate on > this comment further?" > > It's that we now have the ability to drop columns properly isn't it? Well, that and the fact that (a) dropping columns is transaction-safe (something a lot of the big commercial DBs don't even do, I believe) (b) the system takes care of accounting for all the various dependancies the column might have -- so it's difficult (not impossible) to break the database by dropping a column that something else in the DB depends upon. I was trying to think of a response to the query, but couldn't find a way to phrase the above in a way that was sufficiently non-technical. > Perhaps we should just mention that one of the more requested features > for PostgreSQL has been the ability to drop columns using the SQL92 > compliant syntax, so that was added this release? Well, I think you can mention that, definately. Cheers, Neil -- Neil Conway <neilc@samurai.com> || PGP Key ID: DB3C29FC
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