I downloaded the SQLExplorer plugin as you indicate in the article. The .zip file only contains a plugin directory and no features directory as stated.
When I re-start Eclipse and do not see the SQLExplorer option when I use "Open perspective".
I checked the latest version (2.2.4) as well as the one you recommend in the article (2.2.3) and both of them only have a plugins directory.
Although TOAD and other IDEs are very nice, I am looking forward to being able to doing this from inside Eclipse.
Any information you can share with me in this regard would be greatly appreciated. Please send me an email at he address below (it would be great if you use a O'Reilly SQL Explorer on the subject).