SAS Certification Prep Guide, 4th Edition

Controlling Data in the Audit Trail

Overview

Now that you have seen how to initiate audit trails and read an audit trail file, consider the information the audit trail file contains. The audit trail file can contain three types of variables:

• data set variables that store copies of the columns in the audited SAS data set
• audit trail variables that automatically store information about data modifications
• user variables that store user-entered information

You can use additional statements in the PROC DATASETS step to control which variables appear in the audit trail. We consider each of the three types of variables that can ...