Terminology¶

$models\terminology\model_layers.svg$

Reality¶

Things that exist in the real world:

Concrete Things
- “Coker-4”, a delayed coker
- a printout of “PFD-987”
Abstract Things
- “PFD-987”
- the structure of “Coker-4”

Information¶

Information about reality. Or: Model of reality.

Not necessarily complete:
- Completeness impossible for concrete things.
- Completeness can be possible for abstract things (“by definition”)

Information Model¶

Model of Information.

Focus of our work. Cf. reference part.

Meta Model¶

Model of Information Model.

Background¶

UML-MOF.

Instance model, class model.

ISO 15926.