[TAMSIIS-25] - Modified trigger logic that enforces uniqueness of indexes with NULL values in Sybase to no longer compare on the LOC field. - Also removed STRING casting for dates to compare with empty strings in ISNULL functions; instead used very old dates/times for the ISNULL comparison values. This allows the database to use the date field in an index lookup when the field doesn't allow NULL values (and the ISNULL function is not present). - Cleaned up table placement in ERWin. - Updated SOX comparison data files.