Database Systems Lecture 2: File Based Systems

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Questions and Answers

What is the primary distinction between data and information?

  • Data refers to meaningful facts, whereas information is useless in decision making
  • Data is processed to be useful in decision making, while information is just raw facts (correct)
  • Data is unorganized, whereas information is organized and structured
  • Data is processed, while information is raw and unprocessed

What is the primary characteristic of a file in a file-based system?

  • A type of metadata
  • A sequence of records with a specific format (correct)
  • A collection of application programs
  • A collection of unrelated information

What is the main reason for data redundancy in file-based systems?

  • Limited data sharing among programs
  • Different programs have separate copies of the same data (correct)
  • Each file has a specific format
  • Programs maintain their own metadata

What is the primary consequence of program-data dependence in file-based systems?

<p>Each application program needs to include code for metadata and processing routines (A)</p> Signup and view all the answers

What is the estimated percentage of the information systems budget spent on program maintenance in file-based systems?

<p>80% (D)</p> Signup and view all the answers

What is the primary limitation of file-based systems in terms of development?

<p>Lengthy development times (C)</p> Signup and view all the answers

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