Good Afternoon Folks,
I was working within the PS2010 RDB and wanted to get some additional information on the RDB.  I was reminded that I was going to put the MSDN link that I reference often.  Also wanted to share a query (provided by MSFT) – that you can run to find custom field data in the column pool tables.
Enjoy.

SELECT CustomFieldName, ColumnPoolTableName, ColumnPoolColumnName
FROM MFN_Epm_GetAllCustomFieldsInformation()
WHERE EntityName = N'EntityType'
-- Change EntityType to Project, Resource, Task, Assignment, or Timesheet.