Design principles

Design principles

1. Problem partitioning

   • Horizontal partitioning

2. Abstraction

3. top-down and bottom-up design

4. Problem Partitioning

   • Horizontal partitionin
     • input, data transformation
     • Partitioning their architecture horizontally
       • Software that is easier to test.
       • Software that is easier to extend
         • Funtion 1
         • Funtion 3
         • Horizontal Partitioning
       • Propagation of fewer side effects.
   • Vertical Partitioning
     • Top-level modules
       • Should perfom control functions
       • Modules that reside
         • Workers
           • Performing all input
           • Compilation and output tasks
           • Decision-making modules
             • "Workers" Modues
           • Vertical Partitioning

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