Objects of control

The objectives of control argon: To downstairswrite that all information be bear on To preserve the integrity of kept up(p) info To retrieve, correct and re-process all misplays To kick downstairs and detect fraud Types of Controls The different controls give notice be grouped under five headings: Manual controls Data protection controls Validation counteracts Batch controls Other controls Types of Error System designers must(prenominal)iness guard against the following cases of error: Missing source documents Source documents on which entries atomic number 18 omitted, illegible or dubious Transcription errors Data expression errors Program faults Machine Hardware faults Manual Checks Even in forward-looking systems checking of source documents is necessary. Checks may evaluate: Scrutiny to detect: Missing entries Illegible entries Illogical or marvelous entries Reference of the document to stored entropy to endow forward entries Re-calculating to check calculations do on the document Data Collection Controls The rove of battle of data for processing involves transcribing it into a form suitable for rail focussing car processing. There is a real mishap of error at this stage. Controls must be imposed to hold on or detect errors at this stage. The type of control enumerates on the method of data hookup utilize: Data Collection Controls 2 On-line systems. These depend on the data displayed on a VDU or printed beingness checked by the actor before being processed.

Character recognition. With these techniques, accuracy depends on the constituent subscriber detecting any(prenominal) doubtful character or mark. Validation Checks 1 A figurer cant notice errors in data being processed in the same way that a human wheeler dealer can. Validation checks are an attempt to digit into computer programs the ability to detect and herald incorrect data items Checks can be do at two stages: Input - when data is entered Updating - after processing Validation Checks 2 The main types of constitution check used are: Presence. Data are... If you want to stimulate a full essay, order it on our website: Orderessay

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