ISO 10303-43:2021(E)


Integrated generic resource: Representation structures	ISO 10303-43:2021(E) © ISO

Cover page
Table of contents
Copyright
Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
3.2 Abbreviated terms

4 Representation
4.1 General
4.2 Fundamental concepts and assumptions
4.3 Representation type definitions
4.4 Representation entity definitions
4.5 Representation function definitions

A Short names of entities
B Information object registration
C Computer interpretable listings
D EXPRESS-G diagrams
E Change history
Bibliography
Index

Annex E
(informative)

Change history

E.1 General

This annex documents the history of technical modifications made to ISO/TS 10303-43.

Unless otherwise specified all modifications are upwardly compatible to the previous edition. Modifications to EXPRESS specifications are upwardly compatible if:

instances encoded according to ISO 10303-21, and that conform to an ISO 10303 application protocol based on the previous edition of this document, also conform to a revision of that application protocol based on this edition of this document;
interfaces that conform to ISO 10303-22 and to an ISO 10303 application protocol based on the previous edition of this document, also conform to a revision of that application protocol based on this edition of this document;
the mapping tables of ISO 10303 application protocols based on the previous edition of this document remain valid in a revision of that application protocol based on this edition of this document.

E.2 Changes made in edition 2

E.2.1 Summary of changes

The second edition of this document incorporated the modifications to the first edition listed below.

E.2.2 Changes made to schema representation_schema

The following EXPRESS declarations and interface specifications have been added:

ENTITY representation;
ENTITY uncertainty_measure_with_unit;
FUNCTION acyclic_mapped_representation;
FUNCTION item_in_context;
FUNCTION using_representations.

The following EXPRESS declarations and interface specifications have been modified:

TYPE compound_item_definition;
TYPE founded_item_select;
TYPE list_representation_item;
TYPE set_representation_item;
ENTITY compound_representation_item;
ENTITY founded_item;
ENTITY representation_item_relationship;
ENTITY uncertainty_assigned_representation;
ENTITY value_representation_item;
FUNCTION using_items;
FUNCTION valid_measure_value.

E.3 Changes made in edition 3

E.3.1 Summary of changes

The third edition of this document incorporated the modifications to the second edition listed below.

E.3.2 Changes made to schema representation_schema

The following EXPRESS declarations and interface specifications have been added:

ENTITY binary_representation_item;
ENTITY bytes_representation_item;
ENTITY definitional_representation_relationship;
ENTITY definitional_representation_relationship_with_same_context;
FUNCTION acyclic_representation_relationship.

The following EXPRESS declarations and interface specifications have been modified:

ENTITY founded_item;
ENTITY mapped_item;
ENTITY representation_item;
FUNCTION acyclic_mapped_representation.

E.4 Changes made in edition 4

E.4.1 Summary of changes

The fourth edition of this document incorporated the modifications to the third edition listed below.

E.4.2 Changes made to schema representation_schema

The following EXPRESS declarations and interface specifications have been added:

TYPE get_representation_for_items;
TYPE list_item_defined_transformation;
TYPE representation_or_representation_reference;
TYPE rs_description_attribute_select;
TYPE rs_id_attribute_select;
TYPE set_item_defined_transformation;
ENTITY representation_context_reference;
ENTITY representation_reference.

The following EXPRESS declarations and interface specifications have been modified:

REFERENCE_FROM basic_attribute_schema;
TYPE transformation;
ENTITY representation_map;
ENTITY representation_relationship.

E.5 Changes made in edition 5

E.5.1 Summary of changes

This fifth edition of this document incorporates the modifications to the fourth edition listed below.

E.5.2 Changes made to schema representation_schema

The Fundamental concepts and assumptions sub clause was updated to more clearly indicate the design intent and limitations of the model. This includes sub clauses:

Association of items within representation ;
Association of items within representations using an individual relationship structure ;
Association of items within representations using an aggregate structure ;
Transformation ; and
Transformation operators .

The descriptions of the following ENTITIES were updated to more clearly indicate the design intent and limitations of those ENTITIES:

functionally_defined_transformation;
item_defined_transformation; and
representation_relationship_with_transformation.

The following EXPRESS declarations and interface specifications have been modified:

TYPE set_item_defined_transformation;
TYPE transformation;
ENTITY representation_relationship_with_transformation.

The following EXPRESS declarations and interface specifications have been removed:

TYPE list_item_defined_transformation.

Annex E (informative)Change history

Annex E
(informative)

Change history