FOCUSING ON EVENTS

Articles :
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/spptsdk/html/tsptDocLibEvents_SV01034973.asp

Samples :
Episode 1 : The recycle bin
MSDN Article : http://msdn.microsoft.com/msdnmag/issues/05/02/RecycleBinforWSS/default.aspx

FOCUSING ON SQL SERVER

Impact of direct SQL access to SharePoint’s SQL Server database
Read this article : http://blogs.msdn.com/mikefitz/archive/2005/04/01/404802.aspx.
It talks about this tool :
A few lines on locks : http://www.mssqlcity.com/Articles/General/sql2000_locking.htm