Objects of control

The objectives of control argon: To ensure that all in assortmentation be processed To preserve the integrity of maintained data To detect, emend and re-process all misplays To bar and detect fraud Types of Controls The different controls net be grouped under five headings: Manual controls entropy protection controls Validation counteracts Batch controls Other controls Types of Error body designers must guard against the following cases of error: Missing obtain documents Source documents on which entries argon omitted, illegible or equivocal Transcription errors information conceptualisation errors Program faults Machine com launcher hardware faults Manual Checks Even in advanced systems checking of source documents is necessary. Checks whitethorn accept: Scrutiny to detect: Missing entries Illegible entries disunited or unlikely entries Reference of the document to stored data to put forward entries Re-calculating to check calculations made on the document Data prayer Controls The collection of data for bear on involves transcribing it into a form suitable for machine processing. There is a real casualty of error at this stage. Controls must be imposed to hold 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 fictional character subscriber detecting any doubtful character or mark. Validation Checks 1 A figurer cant denounce errors in data being processed in the same(p) way that a human operator can. Validation checks are an attempt to build into computer programs the ability to detect and forerunner 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 val idation check employ are: Presence. Data a! re... If you want to get a across-the-board essay, order it on our website: OrderCustomPaper.com

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