ACG 4101 Lecture Notes - Lecture 4: Internal Control, Transaction Processing, Burroughs Medium Systems

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18 Jul 2017
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What is documentation? set of documents/models (ie narratives, data flow model, flowcharts) Describe who, what, why, when, and where of systems (ie input, process, storage, output, and controls) Sas 94 requires independent auditors to understand all internal control procedures. documentation assists in auditor understanding and documentation of their understanding. Sarbanes-oxley states that management is responsible for internal control system, is responsible for assessing the effectiveness of the ic system, both management and external auditors need to document and test ic system. Data flow diagrams (dfd) graphically describes the flow of data within a system, four basic elements. entity-->data flow & data store---> process. Entity in dfd (square) represents a source of data or input into the system and/or represents a destination/sink of data or output from the system. Entities exist outside of the system or process being modeled. Data flow in dfd (arrow) movement of data between entities, processes, data stores. Process in dfd (circle) represents the transformation of data.

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