used as reference constraint (Q31)

From Crystal Pool
type of constraint for Wikidata properties: used to specify that a property must only be used in references or instances of citation (Q1713)
  • source-only constraint
  • reference-only constraint
Language Label Description Also known as
English
used as reference constraint
type of constraint for Wikidata properties: used to specify that a property must only be used in references or instances of citation (Q1713)
  • source-only constraint
  • reference-only constraint

Statements