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System Design (Security and control design (Data controls (Data type,…

- - - - Double keying
      - Self checking codes
      - Repeating back what the user entered
    - - Existence checks
      - Range checks
      - Cross field validation
  - - - Locks
      - Barriers
      - Safes
      - Security personnel
      - Backup and recovery
      - Logical security
    - - Access controls
        
        Identification
        
        Authentication
        
        Authorisation
      - Firewalls
      - Encryption
      - Anti-malware software
- - - - this is where a designer gradually breaks down each module into a more detailed form. There are 2 approaches
        
        Bottom up - individual base elements of the system are first specified in detail
        
        Top down - an over view of the system is formulated first, but does not detail any first level sub processes.
- - - - User interface style guide
      - Data formats
      - Protocols
      - Security
      - Application specific standard
      - Modelling standards
  - - - Availability
      - Authority
      - Sign off
    - - User interface style guides
      - Reporting standards
      - Module design guidelines
- - - - Functionally correct
    - - User friendly
      - Reliable
      - Secure
      - Accessible
      - Available
      - Capacity
      - Throughput
      - Responsive
      - Flexible
      - Scalable
      - Portable
      - Configurable
    - - Maintainable
      - Well documented
      - Modular
      - Extensible
      - Simple
      - Efficient
      - Reusable
      - Testable
      - Compatible
      - Interoperable
      - Conformant