Part 2 extended data model

latest update: 2020-07-24   


The ISO 15926-2 extensions is the place where we introduce entity types that were "forgotten" in Part 2, such as Person, Organization, InformationObject, etc. We need such entity types:
  • to enable us to further specialize templates at meta model level. For example the template SkillOfAPerson;
  • to enable to declare these individuals.
This topic also gives information about the way the entity types from the ISO 15926-2 Upper Ontology relate to instances thereof in the ISO 15926-4 Reference Data Library, and how to the added subtypes of Part 2 PossibleIndividual.

Also visit the topic that applies this for a pump P-101.

The added entity types are, provisionally, stored in the Part 12 lci: ontology (lci = life cycle integration). In the future, at the time that Part 2 requires an update, these will be incorporated in Part 2.

The code for the extended data model is set-up such that it is possible to use:
  • the Part 2 data model without extensions ("pure" Part 2), or
  • the federation of the Part 2 data model and that lci: extension; since the ClassOfArrangedIndividual is deprecated then, its subtypes are as well in the extension, being redeclared as subtypes of the new ClassOfPhysicalObject that replaces that ClassOfArrangedIndividual (see here).
These new entity types fit in the Part 2 model as shown in the graph below.

Extensions to ISO 15926-2 data model

The additions of members of the subtypes of ClassOfPhysicalObject below the dotted green line should not be instantiated and are used as top of a hierarchy in the RDL only.


Click here for the listing of the data model extension.