Audit under Computerized Information System Environment
Now a days, with vast advancement in information technology, mostly business organization, whether they large or small, is increasingly using computers for data processing or maintaining the accounting records. The use of computers is significantly affects the organization, flow of documents, controls or manner of information processing. Using an EDP environment, techniques or approach to be followed by an auditor would be different from those to be followed in a manual environment.
It should be noted that though the audit techniques change in an EDP environment, yet the principles of auditing remain constant. The main object of an audit is to ensure that the accounts on which the auditor is reporting show a true or fair view of state of affairs at a given date or of the result for the period ended on the date. Even though the auditor can be working in an EDP environment, he should not lose sight of the principal object of audit.
Types of EDP Accounting System
There are various accounting systems can be distinguished by the methods they use for processing transactions, kinds of filling system used for storing or retrieving data and by the hardware configuration comprising the system.
Processing Systems:
1. On Line Real Time Processing Systems
2. Batch Processing Systems
3. Service Bureau Processing
4. Time Sharing
File Systems:
1. Integrated Database System
2. Flat File System
Hardware Configuration:
1. PC Systems
2. On- Line System
3. Distributed Data Processing System
4. Electronic Data Interchange
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Some areas of study are given under:
1. Specific Problems of EDP relating to internal controls
2. Auditing in IT environment
3. Internal controls in computer based system
4. Audit trail
5. Problems faced by auditors in an EDP environment
6. Special audit techniques
7. Tagging and Tracing
8. Using Computers in internal audit Activities
9. Determinants of a successful Computerization of an Organization
10. Service Bureau