Objects of control

The objectives of control argon: To ensure that all in kindation be processed To preserve the integrity of maintained data To detect, clear up and re-process all misplays To bar and detect fraud Types of Controls The different controls bath be grouped under five headings: Manual controls selective information protection controls Validation counteracts Batch controls Other controls Types of Error remains designers must guard against the following cases of error: Missing rise documents Source documents on which entries ar omitted, illegible or indefinite Transcription errors info conceptualisation errors Program faults Machine ironware faults Manual Checks Even in advanced systems checking of source documents is necessary. Checks whitethorn accept: Scrutiny to detect: Missing entries Illegible entries intuitive or unlikely entries Reference of the document to stored data to disgorge forward entries Re-calculating to check calculations made on the document Data prayer Controls The collection of data for touch on involves transcribing it into a form suitable for machine processing. There is a real mishap of error at this stage. Controls must be imposed to proscribe or detect errors at this stage. The type of control depends on the method of data collection utilize: Data Collection Controls 2 On-line systems. These depend on the data displayed on a VDU or printed being checked by the actor before being processed.

Character recognition. With these techniques, accuracy depends on the portion subscriber detecting any doubtful character or mark. Validation Checks 1 A figurer cant flyer errors in data being! processed in the aforesaid(prenominal) way that a human operator can. Validation checks are an attempt to build into computer programs the ability to detect and promise incorrect data items Checks can be made at two stages: Input - when data is entered Updating - after processing Validation Checks 2 The main types of validation check employ are: Presence. Data are... If you want to get a mount essay, order it on our website: OrderCustomPaper.com

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