SCHEMA ARM_schema_214;

 TYPE general_organizational_data_select = SELECT (
   activity,
   design_constraint,
   activity_element,
   design_discipline_item_definition,
   activity_method_assignment,
   document,
   alternate_item_relationship,
   document_file,
   approval_status,
   document_representation,
   assembly_substitute_relationship,
   document_version,
   certification,
   class_category_association,
   class_condition_association,
   general_classification,
   class_inclusion_association,
   geometric_model,
   class_specification_association,
   item,
   class_structure_relationship,
   item_definition_instance_relationship,
   classification_association,
   item_definition_relationship,
   classification_system,
   item_instance,
   complex_product,
   item_instance_relationship,
   complex_product_relationship,
   item_version,
   configuration,
   item_version_relationship,
   contract,
   manufacturing_configuration,
   property_value_association,
   material,
   security_classification,
   organization_relationship,
   security_level,
   person_in_organization,
   simple_property_association,
   person_in_organization_relationship,
   specification,
   physical_assembly_relationship,
   specification_category,
   physical_instance,
   specification_expression,
   physical_instance_test_result,
   specification_inclusion,
   process_operation_definition,
   process_operation_occurrence,
   work_order,
   process_operation_resource_assignment,
   work_request,
   process_plan,
   product_class,
   product_identification,
   product_structure_relationship,
   project,
   property
  );
 END_TYPE;

 TYPE model_change_select = SELECT (
   geometric_model_relationship
  );
 END_TYPE;

 TYPE documented_element_select = SELECT (
   contract,
   material,
   activity,
   approval,
   change,
   item_instance,
   design_constraint,
   descriptive_specification,
   general_classification,
   classification_attribute,
   classification_system,
   certification,
   activity_method,
   item_shape,
   item_definition_instance_relationship,
   item_instance_relationship,
   item_definition_relationship,
   complex_product,
   specification_category,
   work_request,
   work_order,
   security_classification,
   physical_assembly_relationship,
   physical_instance,
   physical_instance_test_result,
   process_plan,
   process_operation_occurrence,
   product_identification,
   product_class,
   product_structure_relationship,
   project,
   property,
   retention_period,
   shape_element,
   shape_element_relationship,
   specific_item_classification,
   specification,
   class_structure_relationship,
   item,
   activity_element,
   item_version,
   person,
   organization,
   design_discipline_item_definition
  );
 END_TYPE;

 TYPE resource_definition_select = SELECT (
   descriptive_specification,
   design_discipline_item_definition,
   item_instance,
   physical_instance,
   product_component
  );
 END_TYPE;

 TYPE specification_operand_select = SELECT (
   specification_expression,
   specification
  );
 END_TYPE;

 TYPE configured_specification_select = SELECT (
   class_specification_association,
   class_condition_association
  );
 END_TYPE;

 TYPE configured_item_select = SELECT (
   process_operation_occurrence,
   item_instance,
   complex_product_select,
   process_plan
  );
 END_TYPE;

 TYPE template_definition_select = SELECT (
   geometric_model,
   external_model
  );
 END_TYPE;

 TYPE complex_product_select = SELECT (
   alternative_solution,
   product_component,
   product_function
  );
 END_TYPE;

 TYPE person_organization_select = SELECT (
   person_in_organization,
   organization
  );
 END_TYPE;

 TYPE contracted_element_select = SELECT (
   item_version,
   activity
  );
 END_TYPE;

 TYPE shape_information_select = SELECT (
   shape_element_relationship,
   shaped_element_select
  );
 END_TYPE;

 TYPE process_operation_input_or_output_select = SELECT (
   design_discipline_item_definition,
   mated_item_association,
   assembly_component_relationship,
   item_instance
  );
 END_TYPE;

 TYPE item_information_select = SELECT (
   design_discipline_item_definition,
   item_instance,
   physical_instance,
   product_component
  );
 END_TYPE;

 TYPE presentation_association_select = SELECT (
   process_plan,
   process_operation_occurrence,
   product_class,
   specification,
   specification_category,
   design_constraint,
   design_discipline_item_definition,
   item_instance,
   item_definition_instance_relationship,
   item_definition_relationship,
   item_instance_relationship,
   complex_product,
   item_version,
   process_operation_definition
  );
 END_TYPE;

 TYPE string_select = SELECT (
   multi_language_string,
   default_language_string
  );
 END_TYPE;

 TYPE model_property_representation_select = SELECT (
   geometric_model,
   external_model
  );
 END_TYPE;

 TYPE activity_element_select = SELECT (
   property,
   specification,
   specification_category,
   specification_expression,
   specification_inclusion,
   class_category_association,
   class_inclusion_association,
   class_specification_association,
   product_class,
   design_constraint,
   activity_method,
   configuration,
   item_instance,
   product_identification,
   document_representation,
   geometric_model,
   document_file,
   assembly_substitute_relationship,
   document,
   document_version,
   product_structure_relationship,
   item_definition_instance_relationship,
   item_definition_relationship,
   item_instance_relationship,
   complex_product,
   process_plan,
   property_value_association,
   process_operation_definition,
   design_discipline_item_definition,
   alternate_item_relationship,
   class_condition_association,
   class_structure_relationship,
   item,
   item_version,
   manufacturing_configuration,
   material,
   process_operation_occurrence,
   physical_instance,
   physical_assembly_relationship,
   simple_property_association,
   project,
   general_classification
  );
 END_TYPE;

 TYPE security_element_select = SELECT (
   work_request,
   physical_instance,
   configuration,
   material,
   activity,
   activity_element,
   work_order,
   project,
   item_version,
   specification,
   specification_category,
   design_constraint,
   item,
   document,
   document_version,
   document_file,
   classification_system,
   physical_instance_test_result,
   assembly_substitute_relationship,
   physical_assembly_relationship,
   geometric_model,
   document_representation,
   manufacturing_configuration,
   complex_product,
   property_value_association,
   property,
   class_structure_relationship,
   product_structure_relationship,
   product_class,
   process_plan,
   simple_property_association
  );
 END_TYPE;

 TYPE approval_element_select = SELECT (
   document,
   document_version,
   document_representation,
   geometric_model,
   activity_method_assignment,
   design_constraint,
   specification_category,
   class_category_association,
   class_specification_association,
   class_condition_association,
   specification_expression,
   specification_inclusion,
   certification,
   contract,
   product_class,
   physical_instance_test_result,
   document_file,
   class_inclusion_association,
   specification,
   configuration,
   material,
   activity,
   activity_element,
   process_plan,
   work_order,
   project,
   work_request,
   physical_assembly_relationship,
   design_discipline_item_definition,
   physical_instance,
   assembly_substitute_relationship,
   alternate_item_relationship,
   product_structure_relationship,
   manufacturing_configuration,
   complex_product,
   property_value_association,
   item_version,
   property,
   class_structure_relationship,
   item_definition_instance_relationship,
   item_definition_relationship,
   item_instance,
   item_instance_relationship,
   general_classification,
   classification_association,
   classification_system,
   simple_property_association
  );
 END_TYPE;

 TYPE change_relationship_select = SELECT (
   item_version_relationship,
   process_plan_relationship,
   design_constraint_relationship,
   shape_element_relationship,
   replaced_definition_relationship,
   replaced_usage_relationship,
   complex_product_relationship,
   process_operation_occurrence_relationship
  );
 END_TYPE;

 TYPE geometric_or_external_model_select = SELECT (
   external_model,
   geometric_model
  );
 END_TYPE;

 TYPE transformation_select = SELECT (
   template_instance,
   geometric_model_relationship_with_transformation
  );
 END_TYPE;

 TYPE event_or_date_select = SELECT (
   event_reference,
   date_time
  );
 END_TYPE;

 TYPE period_or_date_select = SELECT (
   duration,
   event_reference,
   date_time
  );
 END_TYPE;

 TYPE alias_select = SELECT (
   organization,
   product_class,
   approval_status,
   security_level,
   item,
   document,
   document_version,
   specification,
   item_version,
   item_instance,
   specification_category,
   document_representation,
   document_type_property,
   physical_instance,
   geometric_model,
   general_classification,
   complex_product,
   classification_system,
   property,
   classification_attribute,
   design_discipline_item_definition
  );
 END_TYPE;

 TYPE accuracy_select = SELECT (
   geometric_model,
   external_geometric_model
  );
 END_TYPE;

 TYPE instance_definition_select = SELECT (
   design_discipline_item_definition,
   product_identification
  );
 END_TYPE;

 TYPE physical_instance_definition_select = SELECT (
   product_identification,
   design_discipline_item_definition
  );
 END_TYPE;

 TYPE default_language_string = STRING;
 END_TYPE;

 TYPE simulation_context_select = SELECT (
   design_discipline_item_definition,
   item_instance,
   product_specification,
   product_class,
   item_definition_instance_relationship,
   item_instance_relationship,
   item_definition_relationship,
   complex_product
  );
 END_TYPE;

 TYPE assigned_document_select = SELECT (
   document,
   document_version,
   document_file,
   document_representation
  );
 END_TYPE;

 TYPE class_source_select = SELECT (
   external_library_reference,
   plib_class_reference
  );
 END_TYPE;

 TYPE classified_element_select = SELECT (
   design_constraint,
   item,
   approval_status,
   security_level,
   product_class,
   document,
   document_representation,
   project,
   contract,
   activity_method,
   property,
   material,
   product_identification,
   complex_product,
   activity,
   item_version,
   property_value_association,
   item_instance,
   design_discipline_item_definition,
   document_version,
   shape_element,
   specification_category,
   work_order,
   work_request,
   process_plan,
   process_operation_definition,
   process_operation_occurrence,
   document_file,
   simple_property_association,
   specification,
   effectivity
  );
 END_TYPE;

 TYPE property_source_select = SELECT (
   external_library_reference,
   plib_property_reference
  );
 END_TYPE;

 TYPE item_property_select = SELECT (
   product_class,
   design_constraint,
   item_instance,
   design_discipline_item_definition,
   product_structure_relationship,
   item_definition_relationship,
   item_definition_instance_relationship,
   item_instance_relationship,
   item_shape,
   shape_element,
   shape_element_relationship,
   complex_product,
   document_file,
   document_representation,
   product_identification,
   physical_instance
  );
 END_TYPE;

 TYPE model_property_select = SELECT (
   process_property_select,
   item_property_select
  );
 END_TYPE;

 TYPE effective_element_select = SELECT (
   item,
   item_version,
   product_identification,
   item_instance,
   material,
   specification,
   specification_category,
   specification_inclusion,
   specification_expression,
   product_class,
   design_constraint,
   security_classification,
   class_inclusion_association,
   class_category_association,
   class_specification_association,
   assembly_substitute_relationship,
   class_condition_association,
   geometric_model,
   document_file,
   document,
   classification_system,
   product_structure_relationship,
   document_version,
   configuration,
   item_definition_instance_relationship,
   item_definition_relationship,
   item_instance_relationship,
   complex_product,
   property_value_association,
   property,
   class_structure_relationship,
   complex_product_relationship,
   document_representation,
   process_operation_definition,
   process_operation_definition_relationship,
   process_plan,
   process_operation_occurrence,
   process_operation_resource_assignment,
   process_operation_occurrence_relationship,
   simple_property_association,
   general_classification
  );
 END_TYPE;

 TYPE certified_element_select = SELECT (
   item_version_relationship,
   item_version,
   item_instance,
   supplier_solution
  );
 END_TYPE;

 TYPE test_activity_select = SELECT (
   activity,
   process_operation_occurrence
  );
 END_TYPE;

 TYPE process_property_select = SELECT (
   process_plan,
   process_operation_occurrence,
   process_operation_resource_assignment,
   activity,
   activity_method_assignment,
   process_operation_definition
  );
 END_TYPE;

 TYPE model_change_element_select = SELECT (
   geometric_model
  );
 END_TYPE;

 TYPE incremental_change_select = SELECT (
   model_change_element_select
  );
 END_TYPE;

 TYPE instance_usage_context_select = SELECT (
   product_structure_relationship,
   item_definition_instance_relationship,
   process_operation_input_or_output
  );
 END_TYPE;

 TYPE shaped_element_select = SELECT (
   shape_element,
   item_shape
  );
 END_TYPE;

 TYPE final_definition_select = SELECT (
   physical_instance,
   design_discipline_item_definition,
   descriptive_specification
  );
 END_TYPE;

 TYPE product_function_component_select = SELECT (
   product_component,
   product_function
  );
 END_TYPE;

 TYPE date_time_person_organization_element_select = SELECT (
   event_reference,
   general_organizational_data_select
  );
 END_TYPE;

 TYPE group_element_select = SELECT (
   detailed_element,
   shape_element
  );
 END_TYPE;

 TYPE validity_context_select = SELECT (
   organization,
   product_identification,
   product_class
  );
 END_TYPE;

 TYPE shape_definition_select = SELECT (
   external_geometric_model,
   geometric_model
  );
 END_TYPE;

 TYPE project_information_select = SELECT (
   item,
   product_identification,
   document_version,
   product_class,
   document,
   physical_instance,
   complex_product,
   item_version,
   item_instance,
   activity
  );
 END_TYPE;

 TYPE simple_property_select = SELECT (
   item_property_select,
   process_property_select
  );
 END_TYPE;

 TYPE product_constituent_select = SELECT (
   product_function,
   product_component,
   item_instance
  );
 END_TYPE;

 TYPE shape_element_or_relationship_select = SELECT (
   shape_element,
   shape_element_relationship
  );
 END_TYPE;

 TYPE property_value_select = SELECT (
   numerical_value,
   cartesian_point
  );
 END_TYPE;

 TYPE explicit_transformation = SELECT (
   explicit_transformation_2d,
   explicit_transformation_3d
  );
 END_TYPE;

 ENTITY product_class;
  name : OPTIONAL string_select;
  id : STRING;
  description : OPTIONAL string_select;
  level_type : OPTIONAL STRING;
  version_id : OPTIONAL STRING;
 END_ENTITY;

 ENTITY template_instance
  SUBTYPE OF (
   detailed_model_element
  );
  template_definition : template_definition_select;
  id : STRING;
  scale : OPTIONAL REAL;
  origin : axis_placement;
  target : explicit_transformation;
 END_ENTITY;

 ENTITY cartesian_coordinate_space_2d
  SUBTYPE OF (
   cartesian_coordinate_space
  );
 END_ENTITY;

 ENTITY cartesian_coordinate_space_3d
  SUBTYPE OF (
   cartesian_coordinate_space
  );
 END_ENTITY;

 ENTITY general_item_definition_relationship
  SUBTYPE OF (
   item_definition_relationship
  );
  relation_type : STRING;
  description : OPTIONAL string_select;
 END_ENTITY;

 ENTITY tool_part_relationship
  SUBTYPE OF (
   item_definition_relationship
  );
  placement : OPTIONAL transformation_select;
  used_technology_description : OPTIONAL string_select;
 END_ENTITY;

 ENTITY geometrical_relationship
  SUBTYPE OF (
   item_definition_relationship
  );
  description : OPTIONAL string_select;
  definition_placement : transformation_select;
 END_ENTITY;

 ENTITY mating_definition
  SUBTYPE OF (
   design_discipline_item_definition
  );
  mating_type : STRING;
 INVERSE
  mated_items : SET [2:?] OF mated_item_association FOR relating;
 END_ENTITY;

 ENTITY replaced_definition_relationship
  SUBTYPE OF (
   item_definition_relationship
  );
  description : OPTIONAL string_select;
 END_ENTITY;

 ENTITY assembly_component_relationship
  SUPERTYPE OF ( ONEOF(promissory_usage,next_higher_assembly) )
  SUBTYPE OF (
   item_definition_instance_relationship
  );
  SELF\item_definition_instance_relationship.relating : assembly_definition;
  placement : OPTIONAL transformation_select;
 END_ENTITY;

 ENTITY promissory_usage
  SUBTYPE OF (
   assembly_component_relationship
  );
 END_ENTITY;

 ENTITY next_higher_assembly
  SUBTYPE OF (
   assembly_component_relationship
  );
 END_ENTITY;

 ENTITY item;
  id : STRING;
  name : string_select;
  description : OPTIONAL string_select;
 INVERSE
  item_classification : SET [1:?] OF specific_item_classification FOR associated_item;
  associated_version : SET [1:?] OF item_version FOR associated_item;
 END_ENTITY;

 ENTITY item_version;
  id : STRING;
  description : OPTIONAL string_select;
  associated_item : item;
 INVERSE
  associated_product : SET [0:1] OF product_design FOR design;
 END_ENTITY;

 ENTITY design_discipline_item_definition
  SUPERTYPE OF ( ONEOF(mating_definition,assembly_definition,collection_definition) );
  name : OPTIONAL string_select;
  id : STRING;
  associated_item_version : item_version;
  additional_context : SET [0:?] OF application_context;
  initial_context : application_context;
 END_ENTITY;

 ENTITY cartesian_coordinate_space
  ABSTRACT SUPERTYPE OF ( ONEOF(cartesian_coordinate_space_2d,cartesian_coordinate_space_3d) );
  unit_of_values : OPTIONAL SET [2:?] OF unit;
 END_ENTITY;

 ENTITY general_classification;
  classification_source : OPTIONAL class_source_select;
  used_classification_system : OPTIONAL classification_system;
  description : OPTIONAL string_select;
  id : STRING;
  version_id : OPTIONAL STRING;
 END_ENTITY;

 ENTITY general_classification_hierarchy;
  super_classification : general_classification;
  sub_classification : general_classification;
 END_ENTITY;

 ENTITY specific_item_classification;
  associated_item : SET [1:?] OF item;
  description : OPTIONAL string_select;
  classification_name : STRING;
 END_ENTITY;

 ENTITY accuracy;
  accuracy_value : REAL;
  accuracy_type : STRING;
  is_defined_for : SET [1:?] OF accuracy_select;
  description : OPTIONAL string_select;
 END_ENTITY;

 ENTITY activity;
  activity_type : STRING;
  id : STRING;
  status : OPTIONAL STRING;
  description : OPTIONAL string_select;
  resolved_request : SET [0:?] OF work_request;
  concerned_organization : SET [0:?] OF organization;
  supplying_organization : SET [0:?] OF organization;
  requestor : OPTIONAL date_and_person_organization;
  actual_end_date : OPTIONAL date_time;
  planned_end_date : OPTIONAL period_or_date_select;
  planned_start_date : OPTIONAL event_or_date_select;
  actual_start_date : OPTIONAL date_time;
  internal : OPTIONAL BOOLEAN;
  chosen_method : OPTIONAL activity_method;
 INVERSE
  authorization : SET [0:1] OF work_order FOR is_controlling;
 END_ENTITY;

 ENTITY activity_relationship;
  related : activity;
  relating : activity;
  description : OPTIONAL string_select;
  relation_type : STRING;
 END_ENTITY;

 ENTITY approval;
  status : approval_status;
  is_applied_to : SET [1:?] OF approval_element_select;
  is_approved_by : SET [0:?] OF date_and_person_organization;
  planned_date : OPTIONAL date_time;
  actual_date : OPTIONAL date_time;
  scope : SET [0:?] OF organization;
  level : OPTIONAL STRING;
 END_ENTITY;

 ENTITY organization;
  organization_name : STRING;
  visitor_address : OPTIONAL address;
  organization_type : OPTIONAL STRING;
  id : STRING;
  delivery_address : OPTIONAL address;
  postal_address : OPTIONAL address;
 END_ENTITY;

 ENTITY date_and_person_organization;
  person_or_organization : person_organization_select;
  actual_date : date_time;
 END_ENTITY;

 ENTITY contract;
  id : STRING;
  description : OPTIONAL string_select;
  contracted_element : SET [0:?] OF contracted_element_select;
 INVERSE
  release : SET [0:?] OF organization_in_contract FOR signed_contract;
 END_ENTITY;


 ENTITY digital_document
  SUBTYPE OF (
   document_representation
  );
  file : SET [0:?] OF digital_file;
 END_ENTITY;

 ENTITY physical_model
  SUBTYPE OF (
   physical_representation
  );
 END_ENTITY;

 ENTITY physical_document
  SUBTYPE OF (
   physical_representation
  );
  component : SET [0:?] OF hardcopy;
 END_ENTITY;

 ENTITY recyclability_property
  SUBTYPE OF (
   property
  );
 END_ENTITY;

 ENTITY material_property
  SUBTYPE OF (
   property
  );
  property_name : STRING;
 END_ENTITY;

 ENTITY mass_property
  SUBTYPE OF (
   property
  );
 END_ENTITY;

 ENTITY centre_of_mass
  SUBTYPE OF (
   shape_dependent_property
  );
  centre_point : cartesian_point;
  SELF\shape_dependent_property.is_defined_in : cartesian_coordinate_space;
 END_ENTITY;

 ENTITY moments_of_inertia
  SUBTYPE OF (
   shape_dependent_property
  );
  inertia_value : ARRAY [1:3] OF ARRAY [1:3] OF numerical_value;
  SELF\shape_dependent_property.is_defined_in : cartesian_coordinate_space;
  reference_axis_placement : axis_placement;
 END_ENTITY;

 ENTITY project;
  id : STRING;
  name : string_select;
  description : OPTIONAL string_select;
  actual_start_date : OPTIONAL date_time;
  actual_end_date : OPTIONAL date_time;
  planned_start_date : OPTIONAL event_or_date_select;
  planned_end_date : OPTIONAL period_or_date_select;
 END_ENTITY;

 ENTITY process_plan;
  plan_id : STRING;
  name : OPTIONAL string_select;
  description : OPTIONAL string_select;
  produced_output : OPTIONAL SET [1:?] OF item_version;
 END_ENTITY;

 ENTITY process_operation_occurrence;
  plan : process_plan;
  is_defined_in : OPTIONAL cartesian_coordinate_space;
  operation_definition : process_operation_definition;
  id : STRING;
 END_ENTITY;

 ENTITY same_time_machining_relationship
  SUBTYPE OF (
   item_instance_relationship
  );
  description : OPTIONAL string_select;
  placement : OPTIONAL transformation_select;
 END_ENTITY;

 ENTITY alternate_item_relationship;
  fulfilled_requirements : string_select;
  base : item;
  alternate : item;
 END_ENTITY;

 ENTITY shape_element;
  description : OPTIONAL string_select;
  composition : item_shape;
  element_name : OPTIONAL STRING;
 END_ENTITY;

 ENTITY item_version_relationship;
  relating : item_version;
  related : item_version;
  description : OPTIONAL string_select;
  relation_type : STRING;
 END_ENTITY;

 ENTITY date_time;
  time : OPTIONAL STRING;
  date : STRING;
 END_ENTITY;

 ENTITY process_plan_relationship;
  relating : process_plan;
  related : process_plan;
  description : OPTIONAL string_select;
  relation_type : STRING;
 END_ENTITY;

 ENTITY process_operation_input_or_output;
  role : STRING;
  description : OPTIONAL string_select;
  OPERATION : process_operation_occurrence;
  element : process_operation_input_or_output_select;
  placement : OPTIONAL transformation;
  concerned_shape : SET [0:?] OF shape_element;
 END_ENTITY;

 ENTITY process_operation_resource_assignment;
  reference_tool : BOOLEAN;
  OPERATION : process_operation_occurrence;
  reason : OPTIONAL string_select;
  resource_definition : resource_definition_select;
  placement : OPTIONAL transformation;
 END_ENTITY;

 ENTITY mated_item_association
  SUBTYPE OF (
   item_definition_instance_relationship
  );
  SELF\item_definition_instance_relationship.relating : mating_definition;
  placement : OPTIONAL transformation_select;
 END_ENTITY;

 ENTITY person;
  person_name : STRING;
  preferred_business_address : OPTIONAL address;
 INVERSE
  associated_organization : SET [1:?] OF person_in_organization FOR associated_person;
 END_ENTITY;

 ENTITY property
  ABSTRACT SUPERTYPE OF ( ONEOF(cost_property,quality_property,duration_property,material_property,general_property,recyclability_property,mass_property) );
  allowed_unit : SET [0:?] OF unit;
  description : OPTIONAL string_select;
  property_source : OPTIONAL property_source_select;
  id : STRING;
  version_id : OPTIONAL STRING;
 END_ENTITY;

 ENTITY document;
  description : OPTIONAL string_select;
  name : string_select;
  document_id : STRING;
 INVERSE
  associated_version : SET [1:?] OF document_version FOR associated_document;
 END_ENTITY;

 ENTITY material;
  material_name : STRING;
  described_element : SET [1:?] OF item_property_select;
 END_ENTITY;

 ENTITY project_relationship;
  related : project;
  relating : project;
  relation_type : STRING;
  description : OPTIONAL string_select;
 END_ENTITY;

 ENTITY activity_method;
  description : string_select;
  consequence : OPTIONAL STRING;
  name : string_select;
 END_ENTITY;

 ENTITY work_request;
  id : STRING;
  request_type : STRING;
  status : STRING;
  notified_person : SET [0:?] OF date_and_person_organization;
  version_id : OPTIONAL STRING;
  requestor : date_and_person_organization;
  scope : SET [0:?] OF activity_element_select;
  description : OPTIONAL string_select;
 END_ENTITY;

 ENTITY classification_attribute;
  id : STRING;
  name : OPTIONAL string_select;
  description : OPTIONAL string_select;
  allowed_value : SET [0:?] OF property_value_representation;
  attribute_definition : property;
  associated_classification : general_classification;
 END_ENTITY;

 ENTITY organization_relationship;
  related : organization;
  relating : organization;
  relation_type : STRING;
  description : OPTIONAL string_select;
 END_ENTITY;

 ENTITY make_from_relationship
  SUBTYPE OF (
   item_definition_relationship
  );
  description : OPTIONAL string_select;
 END_ENTITY;

 ENTITY general_parameter;
  parameter_role : STRING;
  parameter_value : feature_parameter;
 END_ENTITY;

 ENTITY feature_parameter;
  parameter_name : OPTIONAL STRING;
  parameter_value : value_with_unit;
 END_ENTITY;

 ENTITY descriptive_specification;
  description : string_select;
  id : OPTIONAL STRING;
 END_ENTITY;

 ENTITY organization_in_contract;
  role_of_organization : STRING;
  contracted_organization : organization;
  signature : SET [0:?] OF date_and_person_organization;
  signed_contract : SET [1:?] OF contract;
 END_ENTITY;

 ENTITY product_class_relationship;
  relating : product_class;
  related : product_class;
  description : OPTIONAL string_select;
  relation_type : STRING;
 END_ENTITY;

 ENTITY class_specification_association;
  associated_product_class : product_class;
  association_type : STRING;
  associated_specification : specification;
 END_ENTITY;

 ENTITY class_condition_association;
  condition_type : STRING;
  associated_product_class : product_class;
  description : OPTIONAL string_select;
  associated_condition : specification_expression;
 END_ENTITY;

 ENTITY specification;
  id : STRING;
  name : OPTIONAL string_select;
  description : OPTIONAL string_select;
  category : specification_category;
  version_id : OPTIONAL STRING;
  package : BOOLEAN;
 END_ENTITY;

 ENTITY configuration;
  configured_element : configured_item_select;
  is_solution_for : configured_specification_select;
  configuration_type : STRING;
  inheritance_type : STRING;
 END_ENTITY;

 ENTITY effectivity;
  concerned_organization : SET [0:?] OF organization;
  description : OPTIONAL string_select;
  id : OPTIONAL STRING;
  version_id : OPTIONAL STRING;
  effectivity_context : OPTIONAL STRING;
  period : OPTIONAL duration;
  start_definition : OPTIONAL event_or_date_select;
  end_definition : OPTIONAL event_or_date_select;
 END_ENTITY;

 ENTITY specification_expression;
  description : OPTIONAL string_select;
  operation : STRING;
  operand : SET [1:?] OF specification_operand_select;
  id : OPTIONAL STRING;
 END_ENTITY;

 ENTITY specification_category;
  implicit_exclusive_condition : BOOLEAN;
  id : STRING;
  description : string_select;
 END_ENTITY;

 ENTITY property_value_representation;
  value_determination : OPTIONAL STRING;
  global_unit : OPTIONAL unit;
  qualifier : OPTIONAL STRING;
  definition : property;
  specified_value : property_value;
 END_ENTITY;

 ENTITY lot_configuration
  SUBTYPE OF (
   manufacturing_configuration
  );
  lot_id : STRING;
  lot_size : value_with_unit;
 END_ENTITY;

 ENTITY serial_configuration
  SUBTYPE OF (
   manufacturing_configuration
  );
  serial_start_number : STRING;
  serial_end_number : OPTIONAL STRING;
 END_ENTITY;

 ENTITY dated_configuration
  SUBTYPE OF (
   manufacturing_configuration
  );
  start_date : event_or_date_select;
  end_date : OPTIONAL event_or_date_select;
 END_ENTITY;

 ENTITY class_category_association;
  associated_product_class : product_class;
  mandatory : BOOLEAN;
  associated_category : specification_category;
 END_ENTITY;

 ENTITY alternative_solution
  SUBTYPE OF (
   complex_product
  );

  base_element : complex_product_select;
 END_ENTITY;

 ENTITY product_function
  SUBTYPE OF (
   complex_product
  );
  name : OPTIONAL string_select;
  description : OPTIONAL string_select;
  is_relevant_for : SET [0:?] OF application_context;
 END_ENTITY;

 ENTITY application_context;
  description : OPTIONAL string_select;
  application_domain : STRING;
  life_cycle_stage : STRING;
 END_ENTITY;

 ENTITY technical_solution
  SUBTYPE OF (
   alternative_solution
  );

  description : string_select;
 END_ENTITY;

 ENTITY supplier_solution
  SUBTYPE OF (
   alternative_solution
  );

  supplier : organization;
  probability_rate : OPTIONAL REAL;
 END_ENTITY;

 ENTITY final_solution
  SUBTYPE OF (
   alternative_solution
  );

  final_specification : SET [1:?] OF final_definition_select;
  final_status : STRING;
 END_ENTITY;

 ENTITY collected_item_association
  SUBTYPE OF (
   item_definition_instance_relationship
  );

  SELF\item_definition_instance_relationship.relating : collection_definition;
 END_ENTITY;

 ENTITY quantified_instance
  SUBTYPE OF (
   item_instance
  );

  quantity : numerical_value;
 END_ENTITY;

 ENTITY design_constraint;

  constraint_id : STRING;
  name : OPTIONAL string_select;
  description : OPTIONAL string_select;
  is_valid_for : SET [0:?] OF product_class;
 END_ENTITY;

 ENTITY design_constraint_version
  SUBTYPE OF (
   design_constraint
  );

  version_id : STRING;
 END_ENTITY;

 ENTITY design_constraint_association;

  is_based_on : design_constraint;
  name : OPTIONAL string_select;
  is_constraining : complex_product;
 END_ENTITY;

 ENTITY value_range
  SUBTYPE OF (
   value_with_unit
  );
  upper_limit : NUMBER;
  lower_limit : NUMBER;
 END_ENTITY;

 ENTITY value_limit
  SUBTYPE OF (
   value_with_unit
  );
  limit_qualifier : STRING;
  limit : NUMBER;
 END_ENTITY;

 ENTITY material_property_value_representation
  SUBTYPE OF (
   property_value_representation
  );
  environment_condition : data_environment;
  SELF\property_value_representation.definition : material_property;
 END_ENTITY;

 ENTITY data_environment;
  environment_name : STRING;
  description : OPTIONAL string_select;
 END_ENTITY;

 ENTITY certification;
  name : string_select;
  certification_type : STRING;
  is_applied_to : SET [1:?] OF certified_element_select;
  purpose : OPTIONAL string_select;
 END_ENTITY;

 ENTITY design_constraint_relationship;
  related : design_constraint;
  relating : design_constraint;
  relation_type : STRING;
  description : OPTIONAL string_select;
 END_ENTITY;

 ENTITY date_and_person_assignment;
  is_applied_to : SET [1:?] OF date_time_person_organization_element_select;
  assigned_date_and_person : date_and_person_organization;
  role : STRING;
  description : OPTIONAL string_select;
 END_ENTITY;

 ENTITY date_time_assignment;
  assigned_date_time : date_time;
  role : STRING;
  is_applied_to : SET [1:?] OF date_time_person_organization_element_select;
  description : OPTIONAL string_select;
 END_ENTITY;

 ENTITY person_organization_assignment;
  is_applied_to : SET [1:?] OF date_time_person_organization_element_select;
  assigned_person_organization : person_organization_select;
  role : STRING;
  description : OPTIONAL string_select;
 END_ENTITY;

 ENTITY security_classification;
  is_applied_to : SET [1:?] OF security_element_select;
  level : security_level;
  name : string_select;
  purpose : OPTIONAL string_select;
 END_ENTITY;

 ENTITY activity_element;
  element : SET [1:?] OF activity_element_select;
  associated_activity : activity;
  role : STRING;
 END_ENTITY;

 ENTITY geometric_model
  SUPERTYPE OF ( geometric_model_version );
  is_defined_in : cartesian_coordinate_space;
  model_id : STRING;
  description : OPTIONAL string_select;
  model_extent : OPTIONAL numerical_value;
  additional_element : SET [0:?] OF template_instance;
 END_ENTITY;

 ENTITY external_model
  ABSTRACT SUPERTYPE OF ( ONEOF(external_picture,external_geometric_model) );
  is_defined_as : digital_file;
  is_defined_in : cartesian_coordinate_space;
  description : OPTIONAL string_select;
  model_id : STRING;
 END_ENTITY;

 ENTITY shape_description_association;
  is_defining_shape_for : shape_information_select;
  role : STRING;
  defining_geometry : shape_definition_select;
 END_ENTITY;

 ENTITY item_shape;
  described_object : item_information_select;
  description : OPTIONAL string_select;
 END_ENTITY;

 ENTITY shape_element_relationship;
  relating : shape_element;
  related : shape_element;
  description : OPTIONAL string_select;
  relation_type : STRING;
 END_ENTITY;

 ENTITY geometric_model_relationship;
  relating : geometric_or_external_model_select;
  related : geometric_or_external_model_select;
  description : OPTIONAL string_select;
  relation_type : STRING;
 END_ENTITY;

 ENTITY detailed_geometric_model_element
  ABSTRACT SUPERTYPE OF ( ONEOF(point) )
  SUBTYPE OF (
   detailed_model_element
  );
 END_ENTITY;

 ENTITY transformation
  ABSTRACT SUPERTYPE OF ( ONEOF(transformation_2d,transformation_3d) );
 END_ENTITY;

 ENTITY document_assignment;
  assigned_document : assigned_document_select;
  is_assigned_to : SET [1:?] OF documented_element_select;
  role : STRING;
 END_ENTITY;

 ENTITY document_version;
  description : OPTIONAL string_select;
  id : STRING;
  associated_document : document;
 END_ENTITY;

 ENTITY detailed_element
  ABSTRACT SUPERTYPE OF ( ONEOF(detailed_model_element) );
  name : OPTIONAL string_select;
 END_ENTITY;

 ENTITY point
  ABSTRACT SUPERTYPE OF ( ONEOF(cartesian_point) )
  SUBTYPE OF (
   detailed_geometric_model_element
  );
 END_ENTITY;

 ENTITY geometric_model_relationship_with_transformation
  SUBTYPE OF (
   geometric_model_relationship
  );
  model_placement : transformation;
 END_ENTITY;

 ENTITY multi_language_string;
  additional_language_dependent_string : SET [0:?] OF string_with_language;
  primary_language_dependent_string : string_with_language;
 END_ENTITY;

 ENTITY string_with_language;
  contents : STRING;
  language_specification : language;
 END_ENTITY;

 ENTITY shape_dependent_property
  ABSTRACT SUPERTYPE OF ( ONEOF(centre_of_mass,moments_of_inertia,general_shape_dependent_property) );
  description : OPTIONAL string_select;
  value_determination : OPTIONAL STRING;
  described_element : shaped_element_select;
  is_defined_in : OPTIONAL cartesian_coordinate_space;
 END_ENTITY;

 ENTITY transformation_2d
  SUPERTYPE OF ( ONEOF(implicit_transformation_2d,explicit_transformation_2d) )
  SUBTYPE OF (
   transformation
  );
 END_ENTITY;

 ENTITY transformation_3d
  SUPERTYPE OF ( ONEOF(implicit_transformation_3d,explicit_transformation_3d) )
  SUBTYPE OF (
   transformation
  );
 END_ENTITY;

 ENTITY geometric_model_version
  SUBTYPE OF (
   geometric_model
  );
  version_id : STRING;
 END_ENTITY;

 ENTITY process_plan_version
  SUBTYPE OF (
   process_plan
  );
  version_id : STRING;
 END_ENTITY;

 ENTITY effectivity_relationship;
  relating : effectivity;
  related : effectivity;
  relation_type : STRING;
  description : OPTIONAL string_select;
 END_ENTITY;

 ENTITY work_order;
  is_controlling : SET [1:?] OF activity;
  id : STRING;
  version_id : OPTIONAL STRING;
  description : OPTIONAL string_select;
  work_order_type : STRING;
 END_ENTITY;

 ENTITY element_delivery;
  quantity : value_with_unit;
  destination : organization;
  deliverable_element : activity_element;
 END_ENTITY;

 ENTITY approval_status;
  status_name : STRING;
  used_classification_system : OPTIONAL classification_system;
 END_ENTITY;

 ENTITY approval_relationship;
  relating : approval;
  related : approval;
  relation_type : STRING;
  description : OPTIONAL string_select;
 END_ENTITY;

 ENTITY security_level;
  level_name : STRING;
  used_classification_system : OPTIONAL classification_system;
 END_ENTITY;

 ENTITY assembly_substitute_relationship;
  base : assembly_component_relationship;
  substitute : assembly_component_relationship;
  description : OPTIONAL string_select;
 END_ENTITY;

 ENTITY mated_item_relationship;
  mated_shape : OPTIONAL shape_element_or_relationship_select;
  relating : mated_item_association;
  related : mated_item_association;
  mating_material : SET [0:?] OF quantified_instance;
 END_ENTITY;

 ENTITY property_change;
  is_describing : change;
  added_property : SET [0:?] OF property_value_representation;
  deleted_property : SET [0:?] OF property_value_representation;
  description : string_select;
  id : OPTIONAL STRING;
 END_ENTITY;

 ENTITY change;
  description : OPTIONAL string_select;
  described_change : change_relationship_select;
 END_ENTITY;

 ENTITY single_instance
  SUBTYPE OF (
   item_instance
  );
 END_ENTITY;

 ENTITY physical_instance;

  is_realization_of : OPTIONAL physical_instance_definition_select;
  serial_number : OPTIONAL STRING;
  lot_id : OPTIONAL STRING;
  description : OPTIONAL string_select;
  inventory_number : OPTIONAL STRING;
 END_ENTITY;

 ENTITY physical_assembly_relationship;

  physical_component : physical_instance;
  physical_assembly : physical_instance;
  is_realization_of : item_instance;
 END_ENTITY;

 ENTITY collection_definition
  SUBTYPE OF (
   design_discipline_item_definition
  );
  purpose : OPTIONAL string_select;
 INVERSE
  collected_items : SET [2:?] OF collected_item_association FOR relating;
 END_ENTITY;

 ENTITY assembly_definition
  SUBTYPE OF (
   design_discipline_item_definition
  );
  assembly_type : OPTIONAL STRING;
 END_ENTITY;

 ENTITY item_instance
  ABSTRACT SUPERTYPE OF ( ONEOF(single_instance,quantified_instance,selected_instance,specified_instance) );
  description : OPTIONAL string_select;
  definition : instance_definition_select;
  id : STRING;
 END_ENTITY;

 ENTITY selected_instance
  SUBTYPE OF (
   item_instance
  );
  selection_control : STRING;
  selected_quantity : value_with_unit;
 END_ENTITY;

 ENTITY external_library_reference;
  external_id : STRING;
  library_type : STRING;
  description : OPTIONAL string_select;
 END_ENTITY;

 ENTITY specification_inclusion;
  if_condition : specification_operand_select;
  included_specification : specification_operand_select;
  description : OPTIONAL string_select;
  id : OPTIONAL STRING;
 END_ENTITY;

 ENTITY person_in_organization;
  associated_organization : organization;
  role : STRING;
  location : OPTIONAL address;
  id : OPTIONAL STRING;
  associated_person : person;
 END_ENTITY;

 ENTITY model_property_association;
  described_element : model_property_select;
  associated_property_value : model_property_value;
  validity_context : OPTIONAL validity_context_select;
 END_ENTITY;

 ENTITY quality_property
  SUBTYPE OF (
   property
  );
 END_ENTITY;

 ENTITY cost_property
  SUBTYPE OF (
   property
  );
 END_ENTITY;

 ENTITY property_relationship;
  relating : property;
  related : property;
  description : OPTIONAL string_select;
  relation_type : STRING;
 END_ENTITY;

 ENTITY detailed_model_element
  ABSTRACT SUPERTYPE OF ( ONEOF(detailed_geometric_model_element,template_instance) )
  SUBTYPE OF (
   detailed_element
  );
 END_ENTITY;

 ENTITY retention_period;
  start_definition : event_or_date_select;
  earliest_end_definition : period_or_date_select;
  latest_end_definition : period_or_date_select;
  is_applied_to : SET [1:?] OF general_organizational_data_select;
  retention_purpose : OPTIONAL string_select;
 END_ENTITY;

 ENTITY classification_system;
  description : OPTIONAL string_select;
  id : STRING;
 INVERSE
  allowed_classification : SET [0:?] OF general_classification FOR used_classification_system;
 END_ENTITY;

 ENTITY class_inclusion_association;
  associated_product_class : product_class;
  description : OPTIONAL string_select;
  associated_inclusion : specification_inclusion;
 END_ENTITY;

 ENTITY product_component
  SUBTYPE OF (
   complex_product
  );
  is_influenced_by : SET [0:?] OF class_category_association;
  name : OPTIONAL string_select;
  description : OPTIONAL string_select;
  is_relevant_for : SET [0:?] OF application_context;
  instance_required : BOOLEAN;
 END_ENTITY;

 ENTITY alias_identification;
  alias_id : STRING;
  alias_version_id : OPTIONAL STRING;
  is_applied_to : alias_select;
  alias_scope : OPTIONAL organization;
  description : OPTIONAL string_select;
 END_ENTITY;

 ENTITY document_type_property;
  document_type_name : STRING;
  used_classification_system : OPTIONAL classification_system;
 END_ENTITY;

 ENTITY item_definition_relationship
  ABSTRACT SUPERTYPE OF ( ONEOF(replaced_definition_relationship,geometrical_relationship,tool_part_relationship,make_from_relationship,general_item_definition_relationship,process_state_relationship) );
  relating : design_discipline_item_definition;
  related : design_discipline_item_definition;
 END_ENTITY;

 ENTITY item_definition_instance_relationship
  ABSTRACT SUPERTYPE OF ( ONEOF(collected_item_association,mated_item_association,assembly_component_relationship,general_item_definition_instance_relationship) );
  related : item_instance;
  relating : design_discipline_item_definition;
 END_ENTITY;

 ENTITY replaced_usage_relationship
  SUBTYPE OF (
   item_instance_relationship
  );
  usage_context : instance_usage_context_select;
  description : OPTIONAL string_select;
 END_ENTITY;

 ENTITY item_instance_relationship
  ABSTRACT SUPERTYPE OF ( ONEOF(replaced_usage_relationship,same_time_machining_relationship,general_item_instance_relationship) );
  relating : item_instance;
  related : item_instance;
 END_ENTITY;

 ENTITY instance_placement;
  reference_product_component : product_component;
  placed_instance : single_instance;
  placement : transformation_select;
 END_ENTITY;

 ENTITY event_reference;
  offset : OPTIONAL duration;
  event_context : OPTIONAL general_organizational_data_select;
  event_type : STRING;
  description : OPTIONAL string_select;
 END_ENTITY;

 ENTITY product_identification;

  associated_product_class : product_class;
  name : OPTIONAL string_select;
  version_id : OPTIONAL STRING;
  id : STRING;
  description : OPTIONAL string_select;
 INVERSE
  associated_design : SET [0:1] OF product_design FOR product;
 END_ENTITY;

 ENTITY general_item_definition_instance_relationship
  SUBTYPE OF (
   item_definition_instance_relationship
  );
  description : OPTIONAL string_select;
  relation_type : STRING;
 END_ENTITY;

 ENTITY general_item_instance_relationship
  SUBTYPE OF (
   item_instance_relationship
  );
  relation_type : STRING;
  description : OPTIONAL string_select;
 END_ENTITY;

 ENTITY digital_file
  SUBTYPE OF (
   document_file
  );
 INVERSE
  associated_model_space : SET [0:1] OF external_model FOR is_defined_as;
 END_ENTITY;

 ENTITY hardcopy
  SUBTYPE OF (
   document_file
  );
 END_ENTITY;

 ENTITY document_representation
  ABSTRACT SUPERTYPE OF ( ONEOF(physical_representation,digital_document) );
  description : OPTIONAL string_select;
  id : STRING;
  associated_document_version : document_version;
  creation : OPTIONAL document_creation_property;
  common_location : SET [0:?] OF document_location_property;
  representation_format : OPTIONAL document_format_property;
  size : OPTIONAL document_size_property;
  content : OPTIONAL document_content_property;
 END_ENTITY;

 ENTITY document_file
  ABSTRACT SUPERTYPE OF ( ONEOF(digital_file,hardcopy) );
  file_id : STRING;
  version_id : OPTIONAL STRING;
  document_file_type : OPTIONAL document_type_property;
  external_id_and_location : SET [0:?] OF external_file_id_and_location;
  size : OPTIONAL document_size_property;
  file_format : OPTIONAL document_format_property;
  content : OPTIONAL document_content_property;
  creation : OPTIONAL document_creation_property;
  description : OPTIONAL string_select;
 END_ENTITY;

 ENTITY document_structure;
  relating : document_representation;
  related : document_representation;
  description : OPTIONAL string_select;
  relation_type : STRING;
 END_ENTITY;

 ENTITY document_file_relationship;
  relating : document_file;
  related : document_file;
  description : OPTIONAL string_select;
  relation_type : STRING;
 END_ENTITY;

 ENTITY document_size_property;
  file_size : OPTIONAL value_with_unit;
  page_count : OPTIONAL value_with_unit;
 END_ENTITY;

 ENTITY document_version_relationship;
  description : OPTIONAL string_select;
  relating : document_version;
  related : document_version;
  relation_type : STRING;
 END_ENTITY;

 ENTITY document_content_property;
  detail_level : OPTIONAL STRING;
  geometry_type : OPTIONAL STRING;
  real_world_scale : OPTIONAL numerical_value;
  languages : SET [0:?] OF language;
 END_ENTITY;

 ENTITY document_creation_property;
  creating_system : STRING;
  operating_system : OPTIONAL STRING;
  creating_interface : OPTIONAL STRING;
 END_ENTITY;

 ENTITY document_format_property;
  data_format : OPTIONAL STRING;
  character_code : OPTIONAL STRING;
  size_format : OPTIONAL rectangular_size;
 END_ENTITY;

 ENTITY classification_association;
  role : OPTIONAL STRING;
  definitional : OPTIONAL BOOLEAN;
  classified_element : SET [1:?] OF classified_element_select;
  associated_classification : general_classification;
 END_ENTITY;

 ENTITY unit;
  unit_name : STRING;
 END_ENTITY;

 ENTITY duration_property
  SUBTYPE OF (
   property
  );
 END_ENTITY;

 ENTITY general_property
  SUBTYPE OF (
   property
  );
  property_type : STRING;
 END_ENTITY;

 ENTITY property_value_representation_relationship;
  relation_type : STRING;
  description : OPTIONAL string_select;
  relating : property_value_representation;
  related : property_value_representation;
 END_ENTITY;

 ENTITY property_value_association
  ABSTRACT SUPERTYPE OF ( ONEOF(item_property_association,process_property_association) );
  validity_context : OPTIONAL validity_context_select;
  description : OPTIONAL string_select;
  describing_property_value : property_value_representation;
 END_ENTITY;

 ENTITY plib_class_reference;
  version : STRING;
  supplier_bsu : STRING;
  code : STRING;
 END_ENTITY;

 ENTITY plib_property_reference;
  name_scope : plib_class_reference;
  version : STRING;
  code : STRING;
 END_ENTITY;

 ENTITY activity_method_assignment;
  assigned_method : activity_method;
  associated_request : work_request;
  relation_type : STRING;
 END_ENTITY;

 ENTITY physical_instance_test_result;
  test_activity : OPTIONAL test_activity_select;
  test_result : SET [0:?] OF property_value_representation;
  tested_instance : physical_instance;
  description : OPTIONAL string_select;
  id : STRING;
 END_ENTITY;

 ENTITY process_property_association
  SUBTYPE OF (
   property_value_association
  );
  described_element : process_property_select;
 END_ENTITY;

 ENTITY item_property_association
  SUBTYPE OF (
   property_value_association
  );
  definitional : OPTIONAL BOOLEAN;
  described_element : item_property_select;
 END_ENTITY;

 ENTITY physical_representation
  ABSTRACT SUPERTYPE OF ( ONEOF(physical_model,physical_document) )
  SUBTYPE OF (
   document_representation
  );
 END_ENTITY;

 ENTITY effectivity_assignment;
  assigned_effectivity : effectivity;
  effective_element : SET [1:?] OF effective_element_select;
  role : STRING;
  effectivity_indication : BOOLEAN;
 END_ENTITY;

 ENTITY product_structure_relationship;
  relating : complex_product;
  related : product_constituent_select;
  relation_type : STRING;
  description : OPTIONAL string_select;
 END_ENTITY;

 ENTITY complex_product
  ABSTRACT SUPERTYPE OF ( ONEOF(product_component,product_function,alternative_solution) );
  id : STRING;
  version_id : OPTIONAL STRING;
 END_ENTITY;

 ENTITY partial_document_assignment
  SUBTYPE OF (
   document_assignment
  );
  document_portion : STRING;
 END_ENTITY;

 ENTITY external_geometric_model_with_parameters
  SUBTYPE OF (
   external_geometric_model
  );
  parameter_value : SET [1:?] OF general_parameter;
 END_ENTITY;

 ENTITY external_geometric_model
  SUBTYPE OF (
   external_model
  );
  model_extent : OPTIONAL numerical_value;
 END_ENTITY;

 ENTITY external_picture
  SUBTYPE OF (
   external_model
  );
  SELF\external_model.is_defined_in : cartesian_coordinate_space_2d;
 END_ENTITY;

 ENTITY product_design;
  design : item_version;
  product : product_identification;
 END_ENTITY;

 ENTITY manufacturing_configuration
  ABSTRACT SUPERTYPE OF ( ONEOF(serial_configuration,dated_configuration,lot_configuration) );
  is_solution_for : product_design;
  configured_element : item_instance;
  concerned_organization : SET [0:?] OF organization;
 END_ENTITY;

 ENTITY material_property_association;
  described_material : material;
  associated_property_value : material_property_value_representation;
  definitional : OPTIONAL BOOLEAN;
 END_ENTITY;

 ENTITY specified_instance
  SUBTYPE OF (
   item_instance
  );
  upper_usage : item_instance;
  related_instance : item_instance;
  assembly_context : assembly_definition;
 END_ENTITY;

 ENTITY value_with_unit
  ABSTRACT SUPERTYPE OF ( ONEOF(numerical_value,value_range,value_limit) )
  SUBTYPE OF (
   property_value
  );
  unit_component : OPTIONAL unit;
  significant_digits : OPTIONAL INTEGER;
 END_ENTITY;

 ENTITY complex_product_relationship;
  relating : complex_product;
  related : complex_product;
  description : OPTIONAL string_select;
  relation_type : STRING;
 END_ENTITY;

 ENTITY product_specification
  SUBTYPE OF (
   product_identification
  );
  defining_specification : SET [1:?] OF specification;
 END_ENTITY;

 ENTITY class_structure_relationship;
  related : product_function_component_select;
  relating : product_class;
  description : OPTIONAL string_select;
  relation_type : STRING;
 END_ENTITY;

 ENTITY item_function_association;
  associated_function : product_function;
  associated_item : design_discipline_item_definition;
  description : OPTIONAL string_select;
  association_type : STRING;
 END_ENTITY;

 ENTITY model_property_value;
  describing_model : model_property_representation_select;
  definition : general_property;
 END_ENTITY;

 ENTITY named_size
  SUBTYPE OF (
   rectangular_size
  );

  referenced_standard : OPTIONAL classification_system;
  size : STRING;
 END_ENTITY;

 ENTITY rectangular_size;

  density : OPTIONAL value_with_unit;
  width : OPTIONAL value_with_unit;
  height : OPTIONAL value_with_unit;
 END_ENTITY;

 ENTITY duration;
  time : STRING;
  time_unit : STRING;
 END_ENTITY;

 ENTITY specific_item_classification_hierarchy;
  super_classification : specific_item_classification;
  sub_classification : specific_item_classification;
 END_ENTITY;

 ENTITY language;
  language_code : STRING;
  country_code : OPTIONAL STRING;
 END_ENTITY;

 ENTITY general_shape_dependent_property
  SUBTYPE OF (
   shape_dependent_property
  );
  property_type : STRING;
  unit_component : OPTIONAL unit;
  property_value : property_value_select;
 END_ENTITY;

 ENTITY person_in_organization_relationship;
  relating : person_in_organization;
  related : person_in_organization;
  relation_type : STRING;
  description : OPTIONAL string_select;
 END_ENTITY;

 ENTITY interval_of_time;
  start_definition : event_or_date_select;
  end_definition : period_or_date_select;
 END_ENTITY;

 ENTITY date_time_interval_assignment;
  assigned_time_interval : interval_of_time;
  role : STRING;
  description : OPTIONAL string_select;
  is_applied_to : SET [1:?] OF general_organizational_data_select;
 END_ENTITY;

 ENTITY specification_category_hierarchy;
  sub_category : specification_category;
  super_category : specification_category;
 END_ENTITY;

 ENTITY specific_document_classification_hierarchy;
  super_classification : specific_document_classification;
  sub_classification : specific_document_classification;
 END_ENTITY;

 ENTITY specific_document_classification;
  associated_document : SET [1:?] OF document;
  description : OPTIONAL string_select;
  classification_name : STRING;
 END_ENTITY;

 ENTITY document_location_property;
  location_name : STRING;
 END_ENTITY;

 ENTITY external_file_id_and_location;
  location : document_location_property;
  external_id : OPTIONAL STRING;
 END_ENTITY;

 ENTITY component_placement;
  placed_component : product_component;
  placement : transformation_select;
  reference_product_component : product_component;
 END_ENTITY;

 ENTITY process_operation_definition;
  id : STRING;
  name : OPTIONAL string_select;
  process_type : STRING;
  description : OPTIONAL string_select;
  version_id : OPTIONAL STRING;
 END_ENTITY;

 ENTITY process_operation_definition_relationship;
  related : process_operation_definition;
  relation_type : STRING;
  relating : process_operation_definition;
 END_ENTITY;

 ENTITY process_operation_occurrence_relationship;
  related : process_operation_occurrence;
  relation_type : STRING;
  relating : process_operation_occurrence;
  waiting_time : OPTIONAL property_value;
  description : OPTIONAL string_select;
  cycle_time : OPTIONAL duration;
 END_ENTITY;

 ENTITY value_list
  SUBTYPE OF (
   property_value
  );
  values : LIST [1:?] OF property_value;
 END_ENTITY;

 ENTITY numerical_value
  SUBTYPE OF (
   value_with_unit
  );
  value_component : NUMBER;
 END_ENTITY;

 ENTITY property_value
  ABSTRACT SUPERTYPE OF ( ONEOF(value_list,value_with_unit,string_value) );
  value_name : STRING;
 END_ENTITY;

 ENTITY string_value
  SUBTYPE OF (
   property_value
  );
  value_specification : string_select;
 END_ENTITY;

 ENTITY work_request_relationship;
  related : work_request;
  description : OPTIONAL string_select;
  relation_type : STRING;
  relating : work_request;
 END_ENTITY;

 ENTITY address;
  internal_location : OPTIONAL STRING;
  street_number : OPTIONAL STRING;
  street : OPTIONAL STRING;
  postal_box : OPTIONAL STRING;
  town : OPTIONAL STRING;
  region : OPTIONAL STRING;
  postal_code : OPTIONAL STRING;
  country : OPTIONAL STRING;
  facsimile_number : OPTIONAL STRING;
  telephone_number : OPTIONAL STRING;
  electronic_mail_address : OPTIONAL STRING;
  telex_number : OPTIONAL STRING;
  name : OPTIONAL STRING;
  url : OPTIONAL STRING;
 END_ENTITY;

 ENTITY explicit_transformation_3d
  SUBTYPE OF (
   transformation_3d
  );
  local_origin : cartesian_point;
  axis1 : OPTIONAL direction;
  axis2 : OPTIONAL direction;
  axis3 : OPTIONAL direction;
 END_ENTITY;

 ENTITY direction;
  direction_ratios : LIST [2:3] OF REAL;
 END_ENTITY;

 ENTITY axis2_placement_3d
  SUBTYPE OF (
   axis_placement
  );
  axis : OPTIONAL direction;
  ref_direction : OPTIONAL direction;
 END_ENTITY;

 ENTITY implicit_transformation_3d
  SUBTYPE OF (
   transformation_3d
  );
  transformation_origin : axis2_placement_3d;
  transformation_target : axis2_placement_3d;
 END_ENTITY;

 ENTITY simple_property_association;
  specified_value : property_value;
  value_type : STRING;
  described_element : simple_property_select;
 END_ENTITY;

 ENTITY axis2_placement_2d
  SUBTYPE OF (
   axis_placement
  );
  ref_direction : OPTIONAL direction;
 END_ENTITY;

 ENTITY axis1_placement
  SUBTYPE OF (
   axis_placement
  );
  axis : OPTIONAL direction;
 END_ENTITY;

 ENTITY axis_placement
  ABSTRACT SUPERTYPE;
  location : cartesian_point;
 END_ENTITY;

 ENTITY implicit_transformation_2d
  SUBTYPE OF (
   transformation_2d
  );
  transformation_target : axis2_placement_2d;
  transformation_origin : axis2_placement_2d;
 END_ENTITY;

 ENTITY explicit_transformation_2d
  SUBTYPE OF (
   transformation_2d
  );
  axis1 : OPTIONAL direction;
  axis2 : OPTIONAL direction;
  local_origin : cartesian_point;
 END_ENTITY;

 ENTITY project_assignment;
  is_applied_to : SET [1:?] OF project_information_select;
  assigned_project : project;
  role : STRING;
  description : OPTIONAL string_select;
 END_ENTITY;

 ENTITY process_state_relationship
  SUBTYPE OF (
   item_definition_relationship
  );
  description : OPTIONAL string_select;
 END_ENTITY;

 ENTITY cartesian_point
  SUBTYPE OF (
   point
  );
  coordinates : LIST [2:3] OF REAL;
 END_ENTITY;

END_SCHEMA;