title: System use case Vs. Business use case
body: <p>I am completely new in analysis and design.....</p>
  
  <p>please some one tell me :</p>
  
  <p>what is the difference between System use case and Business use case ?</p>
  
  <p>As far as I know, there is only one diagram in UML called use case diagram..
  Now, what about them ? Do they have separate diagram?</p>
  
  <p>Thank you</p>