ISO 10303-1:2021 pdf download – Industrial automation systems and integration — Product data representation and exchange — Part 1: Overview and fundamental principles.
4.3.3 Support for applications The IRs define a generic information model for product information. They are not sufficient to support the information requirements of an application without the addition of application specific constraints, relationships, and attributes. ISO 10303 defines APs in which the IRs are interpreted to meet the product information requirements of specific applications. The interpretation is achieved by selecting appropriate resource constructs and refining their meaning, by specifying any appropriate constraints, relationships, and attributes. This interpretation results in an application interpreted model (AIM). The AIM is documented as part of an AP. ISO 10303 has two mechanisms to ensure consistent interpretation when a resource construct represents the same information requirement in different APs. One mechanism uses interpreted resource constructs appearing in more than one AP as a documented application interpreted construct (AIC). The other mechanism uses application modules (AMs) that document the harmonized requirements along with the interpreted resource constructs. NOTE Subclauses 6.4 and 6.5 discuss application interpreted constructs and application modules in more detail. The scope and information requirements of the application are specified using the terminology of the application domain. The AP provides a mapping to show how the interpretation of the IRs is used to meet the information requirements of the application domain. ISO 10303 provides business object models that present complex models in a form that may be more understandable to application experts. 4.3.4 Implementation methods Each implementation method included in ISO 10303 is specified by a mapping from the EXPRESS language onto the formal language used for the method. The mapping is independent of the AP. The mapping is expressed in a formal notation. At least three implementation methods for ISO 10303 have been identified (see 6.3.4).