Objects of control

The objectives of control argon: To ensure that all in fleshation be processed To preserve the integrity of maintained data To detect, pay and re-process all misplays To bar and detect fraud Types of Controls The different controls prat be grouped under five headings: Manual controls info protection controls Validation counteracts Batch controls Other controls Types of Error governing body designers must guard against the following cases of error: Missing semen documents Source documents on which entries be omitted, illegible or dubitable Transcription errors data conceptualisation errors Program faults Machine hardware faults Manual Checks Even in advanced systems checking of source documents is necessary. Checks may accept: Scrutiny to detect: Missing entries Illegible entries disjointed or unlikely entries Reference of the document to stored data to beat forward entries Re-calculating to check calculations made on the document Data show Controls Th e collection of data for affect involves transcribing it into a form suitable for machine processing. There is a real hypothesis of error at this stage. Controls must be imposed to disallow 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 office subscriber detecting any doubtful character or mark. Validation Checks 1 A figurer cant ascer tain errors in data being processed in the ! very(prenominal) way that a human operator can. Validation checks are an attempt to build into computer programs the ability to detect and prognosticate 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 apply are: Presence. Data are... If you want to get a dear essay, order it on our website: OrderCustomPaper.com

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