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Document and System Flowcharting in Transaction Processing

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tammylyons
12 diapositives · 184 Views · Jan 04, 2020

Learn about using document flowcharts to analyze system weaknesses and the industry-standard symbols for system flowcharting in AIS. Includes punched card, keying operations, and data flows.

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Document and System Flowcharting in Transaction Processing
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  1. Document Flowcharts Source: Wilkinson Ch_05

  2. Document Flowcharts • Flowcharts are pictorial representations of transaction processing systems that portray flows of some type • ADocument Flowchartemphasizes the hardcopy inputs and outputs and their flows through organizational units • Auditors and accountants may use document flowcharts when analyzing a current system for weaknesses in controls and reports

  3. Punched Card Floppy Disk Keying operation Manual Operation Document Connector between two points on a flowchart Multiple copies of a specific document Journal or ledger Common Document Flowcharting Symbols - I

  4. Permanent file of documents Envelope Information flow Adding machine tape used for batch control Document flow Annotation for additional explanation Common Document Flowcharting Symbols - II

  5. A 1 2 Goods Requisition Form 1 GoodsRequisition Form A File A Sample Document Flowchart Requesting Department Central Supplies Department

  6. System Flowcharts • System Flowchartsdepict the flows of data and processing steps in an AIS • They use symbols that are industry conventions standardized by the American National Standards Institute (ANSI) • Flowcharting symbols are grouped as input-output symbols, processing symbols, storage symbols, data and information flow symbols, and miscellaneous symbols

  7. Punch Card Can also be output. These are rarely used nowadays. Keying Operation Manual Input Document Also output as reports Display General Purpose Input-Output File Used when type of media is unknown or for manual card files, ledgers, batch logs, etc. System Flowchart Symbols Input/Output

  8. Manual Operation Auxiliary Operation Processing Sorting Collate Also known as off-line process System Flowcharting Symbols Processing

  9. Input/Output Punched Card Punched Paper Tape Document Magnetic Disk Magnetic Tape Off-line Storage Online Storage System Flowcharting Symbols Storage

  10. Terminal Can also be an external entity Start/Stop Logic Flow A On-page connector Telecommunication Link Off-page Connector Systems Flowcharting Symbols Connectors

  11. Data Preparation Communication Link Termination Can also be an external entity System Flowcharting Symbols Miscellaneous - I

  12. Bridge for crossing flows Annotation for additional explanation Batch total - any total Goods; e.g., inventory shipment System Flowcharting Symbols Miscellaneous - II