IB CS

• What is the purpose of a requirements specification document?

  It defines the customer’s specific requirements needed to develop a system or software.
• What are the three types of processing in computer science mentioned?

  Online processing, real-time processing, and batch processing.
• What is online processing?

  Processing data by a single processor through the use of equipment that it controls.
• What is real-time processing?

  Data processing performed on-the-fly in which the response is immediate.
• What is batch processing?

  Processing of data that have been composed and processed as a single unit.
• Name two applications of real-time processing.

  Airline reservation systems and online banking.
• What does a system flowchart illustrate?

  The flow of data through individual programs involved, excluding program details.
• What do system flowcharts include?

  Various computer programs, files, databases, associated manual processes, and hardware.
• What is a structure chart used for?

  To describe functions and sub-functions of a system and the relationships between modules.
• What is modular design in software development?

  • Designing system modules individually
  • Combining modules to form a solution
  • Simplifies complex problems
• What is top-down design or "stepwise refinement"?

  A technique that involves partitioning a problem into smaller sub-problems.
• What is pseudocode?

  An artificial language used to describe algorithms, not tied to any specific hardware.
• What are the benefits of a prototype?

  Encourages user-developer participation, gives an idea of the final product, identifies design problems, and increases development speed.
• What does iteration refer to in the design process?

  The repetition of a set of instructions until a desired result is achieved.
• Why is involving stakeholders important during system development?

  To ensure the developed system addresses the correct problem and stays within project scope.
• What are the consequences of failing to involve end-users in the design process?

  The developed system may solve a different problem or address issues outside the project's scope.