CAATs: Substantive testing
Examples:
--Interrogation software查询软件---data files 数据库
---Comparison Programs 比较软件
---Interactive Software 交互软件
--Resident code software 居民代码软件 to review transactions as they are processed.
Considerations:
---Basis understanding of data processing and computer application;
--Experience of the programming language to systems analysis, operating systems;
--How easy to transfer the client's data to auditor's PC;
--Lack of full knowledge of the computer system by the client.
Test Data-- Control sytems for control testing
used to check the controls that prevent processing of invaid data by entering data;--to test breanch limits,unreasonable amount;
Significant problem: test data can not easily to removed without leaving a mark;
Test data only testing controls in the programs being run;
Embedded Audit Facilities-EAF
e.g. two systems, one for normal use system , one for fraud
** continuous review of the data recorded and manner in