Template:Constraint:Symmetric

Symmetric property: if [item A] has this property linked to [item B], then [item B] should also have this property linked to [item A].

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/Constraint:Symmetric#Symmetric

Template documentation

Sample property with this constraint: Property:P26 ("spouse")

• A
  • spouse: B
• B
  • spouse: A

This template categorizes into Category:Properties with symmetric constraints

Usage

{{Constraint:Symmetric}}

Bot jobs

• Sample entry from the report for P26: "Q407: Q1089201"
• This means that "Q1089201" should get P:P26 with value "Q407".
• After an initial run and to avoid that users correcting errors have to do this several times, bots should remember which items they added before and output them to a list for manual check/addition if they re-appear.
• A way to do this could be to append processed items to Constraint_violations/P26/automatically fixed and skip these items in a successive run.

See also

• Template:Constraint
• Template:Constraint:Symmetric/text — translatable texts for this template