Abstract: System and methods of data auditing of transaction data of an application software are described. In one implementation, the method includes data auditing of transaction data by an independent audit module where metadata of the application software is received, and an audit table based on at least one of the audit parameters, indicating the extent of audit data of one or more processes is created in an audit database of the audit module. Further, triggers for capturing data changes from the application software are generated based on at least one audit parameters. Captured changes data is optimized to reduce the storage requirements of audit data. In another implementation, the result of the analysis is displayed in form of a report in user desired format.