Explain the four basic elements of a ‘Data Flow Diagram’

  1. Data is raw, unorganized fact that need to be process. Whereas Information is the processed data. Keeping this fact in view provide at least two examples of Data and Information.
  2. The Quality of information that assures that information is reasonably from error and bias and faithfully represents what is purports to represent. How can you make the information free from errors?
  3. Explain the four basic elements of ‘Data Flow Diagram’ in your own words.
  4. What are the various types of Flow Chart? Explain them in your own words.


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