DDDAudit is used to finds those object ( dont know if it is only for records) definitions which are not same in the DB and the PeopleSoft system (App- Designer)
DDD Audit is a SQR used to find the inconsistencies between the data structures defined in PeopleTools table against the underlying database.
SYS Audit is an SQR used to compare the different people tools tables and find inconsistencies like orphaned objects ex. peoplecode not atteached to any record etc.
DDDAUDIT IS A SQR PROGRAM TO CHECK NUMBER OF RECORD DEFINITIONS WHICH ARE NOT BUILT IN APP DESIGNER BUT THOSE ARE JUST CREATED IN DATABASE.ITS USED WHILE UPGRADE.