Attribute removal: Examples

To delete an entire attribute class from the schema (scorched earth approach):

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To delete a single attribute from an attribute class (selective thinning):

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To unsubscribe an element from an attribute class (genteel bureaucratic approach):


  
    
  
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To remove a specific attribute from an element that holds it privately (repossession):


  
    
  
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Introduction to Writing ODDs, slide 8 of 19