Extensible select and enumeration types

and their elements in schema PRODUCT_PLACEMENT_MIM taking into account BASED_ON types


 characterized_product_definition - EXTENSIBLE SELECT
          product_definition
          product_definition_relationship

 external_identification_item - EXTENSIBLE GENERIC_ENTITY SELECT
          document_file

 groupable_item - EXTENSIBLE GENERIC_ENTITY SELECT
          package_product_concept_feature
          product_concept_feature

 identification_item - EXTENSIBLE GENERIC_ENTITY SELECT
          document_file
          product_class
          product_concept_feature
          product_identification
          shape_representation

 item_identified_representation_usage_definition - EXTENSIBLE GENERIC_ENTITY SELECT
          represented_definition

 product_definition_or_breakdown_element_usage - EXTENSIBLE GENERIC_ENTITY SELECT
          product_definition
          product_definition_usage

 product_definition_or_product_definition_relationship - EXTENSIBLE GENERIC_ENTITY SELECT
          product_definition
          product_definition_usage

 shape_model - EXTENSIBLE GENERIC_ENTITY SELECT
          shape_representation