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  • Classification Item 0..* Level (Optional, Many)

 


Recommendation:

Option A is recommended for the following reasons:

  • It is generally accepted that a classification is hierarchical, even if it is a single level hierarchy.
  • It allows for a Classification Item to be linked to one level currently; and in the future if other levels are required they can be added without the necessity to create a new Classification Item which is linked to a Level.