Part 2 extended data model
Revision log
| Date | Revision description |
| 2024-11-10 | Corrected Model Overview |
| 2024-11-08 | Added a Model Overview |
| 2024-10-27 | updated the data model, mainly moving ClassOfMatter to ClassOfArrangedIndividual |
| 2024-08-14 | inserted the formally proposed data model |
| 2024-07-24 | update proposed data model |
| 2024-03-02 | Withdrew, under protest, proposal to deprecate FunctionalPhysicalObject and MaterializedPhysicalObject |
| 2024-02-27 | Referred to "Added proposal and latest version of data model (with proposed changes)" |
| 2023-11-08 | Referred to "Proposal for Updating ISO 15926-2" |
| 2022-09-25 | Added ClassOfMatter |
| 2022-09-23 | Revised the diagram by proposing the deprecation of ArrangedIndividual, FunctionalPhysicalObject and MaterializedPhysicalObject |
| 2020-07-24 | Removed the first diagram since the link to the topic "How does pump P-101 fit in?" gives a better example. |
| 2019-11-04 | Simplified the first diagram |
| 2019-10-07 | Added the subtypes of PhysicalObject that are excluded from instantiation, except as top class in its RDL class hierarchy. |
| 2018-09-18 | Brought first diagram in line with the Plant Life-cycle Model |
| 2018-05-21 | Removed ClassOfEnergy and Energy again, they appear to be Properties. |
| 2018-01-13 | Added ClassOfEnergy and Energy, although not everybody has the same answer on the question what it is that a power plant produces. |
| 2017-06-17 | The EDM entity types are now stored in the Part 12 lci: ontology ; the top of the hierarchy moved to an instance of ClassOfFunctionalObject (decision by the PCA MRAIL SIG) |
| 2016-11-07 | It was deemed better to keep the forgotten entity types separately in a re-instated edm ontology, since correcting Part 2 will not happen soon |
| 2016-09-11 | The "forgotten" entity types are added now to Part 2; the "fixed" classes for templates are discussed now in a separate topic |
| 2016-05-19 | Part 12 will cover the entity types that were "forgotten" in Part 2 and the "fixed" classes for templates are stored in the tpl ontology. |
| 2016-01-22 | Corrected code listing. |
| 2015-12-15 | The 'edm' moved back as a separate ontology. |
| 2015-08-24 | The 'edm' moved into the 'tpl' ontology. |
| 2015-07-10 | Moved the additional entity types to the template (tpl) ontology |
| 2015-06-28 | Added the (preliminary) code for the edm ontology |
| 2015-06-21 | Changed superclass of ClassOfStream to ClassOfIndividual |
| 2015-02-2 | Editoral; added ClassOfStream |
| 2014-10-12 | Reflecting the agreements made in MRAIL |
| 2014-02-04 | Re-instated the "mirrors" of the dm entity types, because necessary for generic templates. |
| 2014-01-28 | Deleted owl:equivalentClass. |
| 2014-01-27 | Deleted power sets and Part 2 mirror classes in RDL |
| 2013-12-06 | Deleted Option 1; added tables with edm entity types and root classes in the RDL |
| 2013-11-16 | Introduced Options 1 and 2 for discussion reasons; reflected proposal for a new top of the RDL. |
| 2013-05-18 | Revised the RDF code at the bottom, following the latest version of Declaring an object. |
| 2013-02-24 | Revised diagram, added note on distinction between "essential" and "accidental" classification, and added note on "subtype of". Added proposal to extend the Part 2 upper ontology. |
| 2012-08-24 | First issue (earlier as Word file) |