Part 2 extended data model                                                                                                      

Revision log


Date

Description

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

2015-02-20

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)