Comments on: Maybe Amazon should be using a real DBMS after all http://www.dbms2.com/2009/04/14/maybe-amazon-should-be-using-a-real-dbms-after-all/ Choices in data management and analysis Thu, 09 Feb 2012 13:48:12 +0000 hourly 1 http://wordpress.org/?v=3.0.3 By: Joe Celko http://www.dbms2.com/2009/04/14/maybe-amazon-should-be-using-a-real-dbms-after-all/#comment-117022 Joe Celko Thu, 16 Apr 2009 03:59:30 +0000 http://www.dbms2.com/?p=750#comment-117022 Perhaps this is one of many reasons good DB designers use preicates and not assembly language level bit flags to classify data? Perhaps this is one of many reasons good DB designers use preicates and not assembly language level bit flags to classify data?

]]> By: Max Lybbert http://www.dbms2.com/2009/04/14/maybe-amazon-should-be-using-a-real-dbms-after-all/#comment-116973 Max Lybbert Wed, 15 Apr 2009 19:37:31 +0000 http://www.dbms2.com/?p=750#comment-116973 Thinking it over, while SQL doesn't have a solution to the problem, most SQL databases allow people to rollback to previous snapshots of the database (or restore old backups, or whatever you want to call it). Thinking it over, while SQL doesn’t have a solution to the problem, most SQL databases allow people to rollback to previous snapshots of the database (or restore old backups, or whatever you want to call it).

]]> By: Avi Rappoport http://www.dbms2.com/2009/04/14/maybe-amazon-should-be-using-a-real-dbms-after-all/#comment-116885 Avi Rappoport Wed, 15 Apr 2009 00:11:10 +0000 http://www.dbms2.com/?p=750#comment-116885 Heh, that's pretty funny! There was someone from inside Amazon who said they were using standard software -- except for the most crucial bits. They Implied that there's some old homegrown crufty software that they just use and try not to break. Also: ridiculous to allow any random person to make any kind of change to the global systems without signoff from management. That's what management is supposed to be for! Heh, that’s pretty funny!

There was someone from inside Amazon who said they were using standard software — except for the most crucial bits. They Implied that there’s some old homegrown crufty software that they just use and try not to break.

Also: ridiculous to allow any random person to make any kind of change to the global systems without signoff from management. That’s what management is supposed to be for!

]]> By: Raoul Duke http://www.dbms2.com/2009/04/14/maybe-amazon-should-be-using-a-real-dbms-after-all/#comment-116874 Raoul Duke Tue, 14 Apr 2009 22:01:04 +0000 http://www.dbms2.com/?p=750#comment-116874 Database data should be under version control. Database data should be under version control.

]]> By: Max Lybbert http://www.dbms2.com/2009/04/14/maybe-amazon-should-be-using-a-real-dbms-after-all/#comment-116859 Max Lybbert Tue, 14 Apr 2009 18:11:08 +0000 http://www.dbms2.com/?p=750#comment-116859 I think the problem is trying to avoid false positives/false negatives when flipping the bit back. How would you correct an error in a SQL database if somebody set true/false flag to null on every item in a table and then committed the transaction? update items set adult = null; I think the problem is trying to avoid false positives/false negatives when flipping the bit back.

How would you correct an error in a SQL database if somebody set true/false flag to null on every item in a table and then committed the transaction?

update items set adult = null;

]]> By: Curt Monash http://www.dbms2.com/2009/04/14/maybe-amazon-should-be-using-a-real-dbms-after-all/#comment-116858 Curt Monash Tue, 14 Apr 2009 17:59:56 +0000 http://www.dbms2.com/?p=750#comment-116858 Yep. Tony Bain got to me on that on Twitter, and I edited accordingly. ;) Thanks for the sharp eyes! CAM Yep. Tony Bain got to me on that on Twitter, and I edited accordingly. ;)

Thanks for the sharp eyes!

CAM

]]> By: UnHolyGuy http://www.dbms2.com/2009/04/14/maybe-amazon-should-be-using-a-real-dbms-after-all/#comment-116853 UnHolyGuy Tue, 14 Apr 2009 16:32:50 +0000 http://www.dbms2.com/?p=750#comment-116853 SimpleDB is amazon. BigTable is google's. SimpleDB is amazon. BigTable is google’s.

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