Extensible select and enumeration types

and their elements in schema PHYSICAL_UNIT_INTERCONNECT_DEFINITION_MIM taking into account BASED_ON types


 characterized_product_definition - EXTENSIBLE SELECT
          product_definition
          product_definition_relationship

 groupable_item - EXTENSIBLE GENERIC_ENTITY SELECT
          package_product_concept_feature
          product_concept_feature

 identification_item - EXTENSIBLE GENERIC_ENTITY SELECT
          product_class
          product_concept_feature
          product_identification