Extensible select and enumeration types

and their elements in schema QUALIFICATIONS_MIM taking into account BASED_ON types


 certification_item - EXTENSIBLE GENERIC_ENTITY SELECT
          applied_qualification_type_assignment

 classification_item - EXTENSIBLE GENERIC_ENTITY SELECT
          qualification_type

 date_and_time_item - EXTENSIBLE SELECT
          applied_qualification_type_assignment

 date_item - EXTENSIBLE SELECT
          applied_qualification_type_assignment

 organization_item - EXTENSIBLE SELECT

 person_and_organization_item - EXTENSIBLE SELECT
          applied_qualification_type_assignment
          qualification_type

 person_organization_item - EXTENSIBLE GENERIC_ENTITY SELECT
          person