Re: The wisdom of the object mentors (Was: Searching OO Associations with RDBMS Persistence Models)
From: Andrew McDonagh <news_at_andmc.com>
Date: Fri, 02 Jun 2006 23:49:45 +0100
Message-ID: <e5qfah$u5h$1_at_news.freedom2surf.net>
>
> Agreed. It is noticably easier to do if the system is offline, but
> I have myself performed *many* schema updates to an enormous
> mission critical database without taking anything offline.
>
>
> Marshall
>
Date: Fri, 02 Jun 2006 23:49:45 +0100
Message-ID: <e5qfah$u5h$1_at_news.freedom2surf.net>
Marshall wrote:
> Andrew McDonagh wrote:
>> phlip wrote: >>> Andrew McDonagh wrote: >>> >>>> As for refactoring, most of the difficulty comes down to the limitations >>>> of the store procedure language and development environments not >>>> supporting automated refactorings. >>>> >>>> Its possible, just difficult and manual. >>> I thought the hard part was upgrading live user data on the fly. >>> >>> Sounds like another reason for careful partitioning ;-) >>> >> without taking the system offline its certainly hard, otherwise its not.
>
> Agreed. It is noticably easier to do if the system is offline, but
> I have myself performed *many* schema updates to an enormous
> mission critical database without taking anything offline.
>
>
> Marshall
>
Yep - we do it all the time - its do-able - just harder than offline working. Received on Sat Jun 03 2006 - 00:49:45 CEST