Design Principles

• Modularity

  • Maintainability
  • Reusability
    • Libraries of object class catalogs
  • Reliability
  • Extendability
  • Standardized
  • Independence
  • Variety in Use
  • Top-Down Design
    • Start with Abstract Description of New System
    • Refine View in Successive Steps
  • Bottom-Up Design
    • Start with Objects and Assemble them to completed product

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