Derivation

Directed

yes

Source end

Allowed

Relator

Multiplicity

1 - 1

Target end

Allowed

material

Multiplicity

1 - 1

Binary properties

Reflexivity

no

Transitivity

no

Symmetry

no

Cyclicity

no

Definition

«Material» relation can be completely derived (via «Derivation») from the «Relator» and the corresponding «Mediation» relations. Derivation makes the cardinality constraints of the mediation relations collapse (see «Material» relation, example 2).

Also, several «Material» relations can be derived from a single «Relator» and «Mediation» relations (see «Material» relation, example 1).

Common questions

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Examples

EX1:

For more examples see «Relator», «Material», and Relator pattern.

Quoted from:

GUIZZARDI, Giancarlo. Introduction to Ontological Engineering. [presentation] Prague: Prague University of Economics, 2011.