Data, information and knowledge

• What is data


  Refers to raw, uniterpreted figures without any context
• What is primary data


  Data collected by the user for a specific purpose
• What is secondary data


  Data collected by a different person for a different purpose
• What is information


  Data that has been presented in a meaningful way
• How do database systen create information


  Using specific algorithms/programs to turn data into information
• What is knowledge


  An application of data and information, using them to predict the future
• How do database systems use knowledge


  Can develop knowledge bases using machine learning algorithms