Paul Randal has been writing an excellent series
on how DBCC CHECKDB works within SQL Server.
Explaining how SQL Server 2000 and 2005
present a consistent view of the data for checking and why that is
important. Paul moves onto
does and then [story:sqlserver2005-dbcc-for-vldb].
Paul Randal worked as the Lead Developer / Manager for a team working on the
SQL Server Storage Engine responsible for DBCC.