The Design Phase: factors to be considered when designing the input Requirements
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The Design Phase: factors to be considered when designing the input Requirements

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    Emmy K.
    RW
    Emmy K.

    GIGO

    Zinabie Tadesse G.
    ET
    Zinabie Tadesse G.

    When designing input, the programmer should: *Identify duplicate data - Efficient program design requires that the program only collect and store each data element once. Programmers should analyse the data requirements and identify where data is used more than once and ensure it is collected just once *Identify methods of reducing input errors - When collecting data, the programmer should make use of as many of the features available to ensure that the data being collected is as free from errors as possible. This can be achieved through the use of features like drop down boxes, radio buttons, check boxes etc. that limit the user to selecting from pre-defined "correct" options. *Identify data validation checks - While it is possible to limit the users choices to pre-defined choices, it may not always be possible or practical to do so. An example would be postcodes. While all postcodes are pre-defined, there are so many of them it would not be possible to list them all on a screen, so another method must be employed to make sure the data is accurate *Input screen/method design - Thought needs to be given to the actual design of the input collection screens or methods. Care needs to be taken to ensure the screens that collect the data are arranged in an attractive and logical manner.

    Ahmed Sayed A.
    EG
    Ahmed Sayed A.

    When designing input, the programmer should: *Identify duplicate data - Efficient program design requires that the program only collect and store each data element once.

    Khan Agha S.
    AF
    Khan Agha S.

    There are a number of techniques that a good programmer will use to ensure that the data they collect is of the best quality possible. They will limit the opportunities for the user to enter the wrong data, and will ensure the user does not have to enter data twice.

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