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Systems Design – 1 (scope of design (Input Design ((Efficiency,…

- - - - Efficiency
      - Reliability
      - Timing .
      - Accuracy
      - Usability
      - Cost
  - - - On demand
        
        Summary
        
        Exception
        
        Data dumps
        
        Archive
  - - - consistency (consistent look and feel, use of terminology, and so on);
      - following the logical workflow;
      - logical tab sequence;
      - meaningful field descriptions and formats (for example, ‘Enter order date (dd/mm/yyyy)’);
      - identification of mandatory values;
      - default values;
      - confirmation messages;
      - clear error messages;
      - progress indicators;
      - facilities to undo/back out;
      - context-sensitive help;
      - alternative data entry mechanisms (such as keyboard shortcuts);
      - limited entry options (such as drop-down lists and tick boxes);
      - use of jargon-free language;
      - simplicity (uncluttered screens, reports with only relevant information, and so on).
- - - - User-friendly
      - Reliable
      - Secure
      - Accessible
      - Available
      - Capacity
      - Throughput
      - Responsive
      - Flexible
      - Scalable
      - Portable
      - Configurable
  - - - Maintainable
      - Well-documented
      - operational use.
      - Modular
      - Extensible
      - Simple
      - Efficient
      - Re-usable
      - Testable
      - Conformant
      - Compatible
      - Interoperable
- - - - bottom down
      - top up