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System Life Cycle - Coggle Diagram

- - - - They are distributed to employees/customers to find out a range of opinions.
        
        Advantage
        
        They can reach a larger audience.
        
        Disadvantage
        
        They may not be completed accurately.
    - - People who use the current system are interviewed to get feedback.
        
        Advantage
        
        Can ask more open ended questions.
        
        Disadvantage
        
        It is a time consuming process.
    - - The use of the current system is observed to see how it works.
        
        Advantage
        
        Information will not be biased.
        
        Disadvantage
        
        Employees may feel uncomfortable being observed.
- - - - This is done to be checked to see if only the correct values can be entered into the relevant fields.
    - - This is done to see if they are user friendly and to see if the different components work.
  - - - Abnormal data outside the range.
      - Extreme data on the boundaries of the range
      - Normal data within a given range.
- - - - Drop down lists to choose an option.
      - Buttons to go forward or backwards, save and delete records.
      - Tick boxes/radio buttons to enter choices.
        :
- - - - Advantage :
        
        If the new system does not meet the requirements then the old system is available.
      - Disadvantage
        
        This will require more employees which will result in more costs.
    - - Advantage
        
        Only a new part of the system is introduced when the current phase is working properly.
      - Disadvantage
        
        Time consuming
    - - Advantage
        
        The whole system is fully tested before it is implemented.
      - Disadvantage
        
        If the new system fails then the old system will not be available.
    - - Advantage
        
        If the new system does not meet the requirements then only one department is affected.
      - Disadvantage
        
        Time consuming.
- - - - User Documentation is intended to help the users of the system.
      - Technical Documentation needs to know exactly how the system works.