Characteristic

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Definition:	fact type that has exactly one role

Definition:	abstraction of a property of an object (thing) or of a set of objects

Source:	SBVR	Meaning	Concept

Source:	ISO 1087-1 (English)	3.2.4	characteristic

Note:	A characteristic always has exactly one role, but it can be defined using fact types having multiple roles.

Example:

The characteristic ‘driver is of age’ with this definition: “the age of the driver is at least the EU-Rent Minimum Driving Age.” The semantic formulation of this definition appears in the introduction to Clause 9 - Logical Formulation of Semantics Vocabulary."The characteristic ‘driver is of age’ with this definition: “the age of the driver is at least the EU-Rent Minimum Driving Age.” The semantic formulation of this definition appears in the introduction to Clause 9 - Logical Formulation of Semantics Vocabulary." cannot be used as a page name in this wiki.

Example:	The fact type ‘shipment is late’ whose instances are actualities of shipments being late. There is one instance of the fact type for each shipment that is late.

Synonym	unary fact type

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