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Link: http://jonathanlewis.wordpress.com/2009/12/23/btree-bitmap/
In a recent ‘philosophy’ post I focused on the critical mental image that should be adopted when comparing B-tree and bitmap indexes. I was a little surprised, however, to discover that the idea I proposed needed further explanation. So here’s a note that expands on the original comment.
The point that caused confusion was simple: when [...]
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