Products of System Development

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Products of System Development

• Functions a logical function describes a system
  function independent of the technology used while
  a physical function describes a system function
  in terms of the technology used
• Input -- activities performed to access data for
  processing
• Processing ways that data are manipulated to
  perform business functions and produce
  information of value to decision making
• Output activities required to generate business
  documents or reports
• Storage activities required to maintain system
  data
• Control activities performed to verify the
  validity and accuracy of inputs and outputs, and
  to ensure the integrity of stored data
• Components from a sociotechnical perspective
  include not only the technology but also the
  behavioral or social factors that affect how well
  an information system will meet organizational
  and individual requirements
• People users, designers, implementers
• Procedures standard operating procedures
• Data facts collected by an organization to be
  organized into useful information
• Software stored instructions that tell the
  computer what to do
• Hardware the physical equipment used to enter,
  process, output, store and communicate data