What is the difference between 'includes', 'extends' and 'uses'?

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予麋鹿 2021-02-18 21:37
In a use case diagram what is the difference between <>, <> and <>? Are

      
      
        
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                   暖寄归人
                                             
                
                
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                2021-02-18 22:28
              

            
            
                        
includes and uses are the same. From http://www.agilemodeling.com/essays/useCaseReuse.htm above


  An include dependency, formerly known as a uses relationship in UML v1.2 and earlier

    
             
                                                        
            
            
              
                
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