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3.1 PRELIMINARY ANALYSIS - Coggle Diagram

- - - - 3) Processes
        
        -The student record system must calculate the GPA at the end of each semester
      - 1) Outputs
        
        -The Web site must report online volume statistics every four hours, and hourly during peak periods
      - 4) Performances
        
        -The system support 25 users online simultaneously
      - 2) Input
        
        -Manufacturing employees must swipe their ID card into online data collection terminals that recprd labor costs and calculate production efficiency
      - 5) Controls
        
        -The system must provide lohon securit at the operating system level and at the application level
- - - - = is a top-down representation of a function or process
      - = FDD can used at several stages of systems development
      - = an analyst can show business functions and break them down into lower-kevel functions and processes
    - - = is a widely used method of visualizing and documenting software system design
      - = uses object-oriented design concepts, but it is independent of any specific programming language and can be used to describe business processes and requireents generally
      - UML provides various graphica tools
        
        1) use case diagram
        
        -represents the interaction between users and the information system
        
        2) sequence diagram
        
        -show the timing of interaction between objects as they occur