Comments on: Database compression is heavily affected by the kind of data http://www.dbms2.com/2008/09/22/database-compression/ Choices in data management and analysis Wed, 08 Feb 2012 22:51:14 +0000 hourly 1 http://wordpress.org/?v=3.0.3 By: Infology.Ru » Blog Archive » Оценивая КПД системы хранения: какую долю объема системы хранения занимают данные пользователя http://www.dbms2.com/2008/09/22/database-compression/#comment-100117 Infology.Ru » Blog Archive » Оценивая КПД системы хранения: какую долю объема системы хранения занимают данные пользователя Tue, 21 Oct 2008 21:14:42 +0000 http://www.dbms2.com/?p=561#comment-100117 [...] Сжатие данных. Я много писал о компрессии данных. [...] [...] Сжатие данных. Я много писал о компрессии данных. [...]

]]> By: Vertica finally spells out its compression claims | DBMS2 -- DataBase Management System Services http://www.dbms2.com/2008/09/22/database-compression/#comment-97870 Vertica finally spells out its compression claims | DBMS2 -- DataBase Management System Services Wed, 24 Sep 2008 09:54:25 +0000 http://www.dbms2.com/?p=561#comment-97870 [...] It’s clear what Omer means by most of those categories from reading the post, but I’m a little fuzzy on what “Consumer Data” or “Marketing Analytics” comprise in his taxonomy. Anyhow, Omer’s post is a huge improvement over my recent one — based on a conversation with Omer — which featured some far less accurate or complete compression numbers. [...] [...] It’s clear what Omer means by most of those categories from reading the post, but I’m a little fuzzy on what “Consumer Data” or “Marketing Analytics” comprise in his taxonomy. Anyhow, Omer’s post is a huge improvement over my recent one — based on a conversation with Omer — which featured some far less accurate or complete compression numbers. [...]

]]> By: Curt Monash http://www.dbms2.com/2008/09/22/database-compression/#comment-97796 Curt Monash Mon, 22 Sep 2008 20:18:56 +0000 http://www.dbms2.com/?p=561#comment-97796 Neil, I'm pretty sure it's lossless. That's always what's meant in talking of compression of other kinds of data, and I don't know why this kind would be an exception. CAM Neil,

I’m pretty sure it’s lossless. That’s always what’s meant in talking of compression of other kinds of data, and I don’t know why this kind would be an exception.

CAM

]]> By: Neil Raden http://www.dbms2.com/2008/09/22/database-compression/#comment-97795 Neil Raden Mon, 22 Sep 2008 20:00:51 +0000 http://www.dbms2.com/?p=561#comment-97795 Curt, I'd love to get a better definition of compression. When they say 60X compression, do they really mean 60x of all of the information with no data loss? In reality, weblog and clickstream data is full of junk that doesn't get integrated. I haven't done this myself in a few years, but I seem to recall that we stripped out and analyzed only a small faction of each record. -NR Curt,

I’d love to get a better definition of compression. When they say 60X compression, do they really mean 60x of all of the information with no data loss? In reality, weblog and clickstream data is full of junk that doesn’t get integrated. I haven’t done this myself in a few years, but I seem to recall that we stripped out and analyzed only a small faction of each record.

-NR

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