From b2evolution manual
This manual page is outdated. NEW PAGE: Technical Documentation in b2evolution v5+.
The Technical Documentation is where you can find information about the code of b2evolution, extracted directly from the code itself but placed together in a readable and rich envrionment. It is useful to find events that your plugins can use, or information on a variable or function within the b2evolution core. You can find it here.
Please note: it gets currently not updated regularly anymore, because PhpDocumentor consumes too much memory. I'll think about generating it locally and uploading it to the server and probably only provide it for released versions and not the CVS one. Blueyed 13:22, 7 July 2006 (CDT)
 Database schema
Graphics of the (approximate) database schema are available at: http://doc.b2evolution.net/DB_schema