Objects of control

The objectives of control argon: To ensure that all in jumpation be processed To preserve the integrity of maintained data To detect, remedy and re-process all misplays To bar and detect fraud Types of Controls The different controls rout out be grouped under five headings: Manual controls information protection controls Validation counteracts Batch controls Other controls Types of Error body designers must guard against the following cases of error: Missing offset documents Source documents on which entries be omitted, illegible or suspicious Transcription errors selective information 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 disordered or unlikely entries Reference of the document to stored data to tell forward entries Re-calculating to check calculations made on the docum ent Data assembly Controls The collection of data for bear upon involves transcribing it into a form suitable for machine processing. There is a real possible action of error at this stage. Controls must be imposed to foreclose 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 timbre subscriber detecting any doubtful character or mark. V alidation Checks 1 A figurer cant rule erro! rs in data being processed in the selfsame(prenominal) way that a human operator can. Validation checks are an attempt to build into computer programs the ability to detect and forebode 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 large essay, order it on our website: OrderCustomPaper.com

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