Comments on: Bitmap Index – when to use it? http://dylanwan.wordpress.com/2008/02/01/bitmap-index-when-to-use-it/ My notes about Business Intelligence, Data Warehousing, OLAP, and Master Data Management Mon, 12 Oct 2009 21:23:38 +0000 http://wordpress.com/ hourly 1 By: johnwu http://dylanwan.wordpress.com/2008/02/01/bitmap-index-when-to-use-it/#comment-349 johnwu Fri, 22 Feb 2008 23:44:38 +0000 http://dylanwan.wordpress.com/?p=199#comment-349 Looks like I did not get the url through. The FastBit web site is at <a HREF="http://sdm.lbl.gov/fastbit/" rel="nofollow">http://sdm.lbl.gov/fastbit/</a> and the paper quoted is <a HREF="http://crd.lbl.gov/%7Ekewu/ps/LBNL-49627.html" rel="nofollow">http://crd.lbl.gov/%7Ekewu/ps/LBNL-49627.html</a>. The software is distributed from <a HREF="https://codeforge.lbl.gov/projects/fastbit/" rel="nofollow">https://codeforge.lbl.gov/projects/fastbit/</a>. Hope the URL get through this time around. Looks like I did not get the url through. The FastBit web site is at http://sdm.lbl.gov/fastbit/ and the paper quoted is http://crd.lbl.gov/%7Ekewu/ps/LBNL-49627.html.
The software is distributed from https://codeforge.lbl.gov/projects/fastbit/.
Hope the URL get through this time around.

]]> By: johnwu http://dylanwan.wordpress.com/2008/02/01/bitmap-index-when-to-use-it/#comment-347 johnwu Sat, 16 Feb 2008 02:31:54 +0000 http://dylanwan.wordpress.com/?p=199#comment-347 Just in case you don't have to use a database system but want to benefit from the best bitmap index around, you can try something called FastBit . Here is a quote from one of their publications: "Compared to BBC, a scheme well-known for its operational efficiency, WAH performs logical operations about 12 times faster." Just in case you don’t have to use a database system but want to benefit from the best bitmap index around, you can try something called FastBit .

Here is a quote from one of their publications:
“Compared to BBC, a scheme well-known for its operational efficiency, WAH performs logical operations about 12 times faster.”

]]> By: Dylan Wan http://dylanwan.wordpress.com/2008/02/01/bitmap-index-when-to-use-it/#comment-341 Dylan Wan Sat, 02 Feb 2008 02:04:39 +0000 http://dylanwan.wordpress.com/?p=199#comment-341 I just found a very good white paper on oracle.com: Bitmap Index vs. B-tree Index: Which and When? http://www.oracle.com/technology/pub/articles/sharma_indexes.html I just found a very good white paper on oracle.com: Bitmap Index vs. B-tree Index: Which and When?
http://www.oracle.com/technology/pub/articles/sharma_indexes.html

]]>