Help:Property pages

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Introduction

Property pages describe properties and contain additional information for functionality, service and maintenance, and import and export. The properties described below are "properties for properties". These will always have a • [Property order] in the range of 9300 - 9499.

Header

Label*

  • The name of the property
  • The title should be short but clear
  • The label should be understandable in function of the datatype and/or the relation it describes

Description

  • You can give a short (max 30 words) description of the property.

Also known as

  • preferably we do not use aliases here, except for improving finding.
  • Example all date properties could have an alias starting with date.

Data type*

  • Defines the type of data that can be entered in the property
  • Needs to be chosen when creating the property and can’t be changed.
  • Possible values are described in List datatypes

Used properties

System property (Q10842)


Inverse property label (P232)

  • Should reflect the opposite of the Label, in other words, if a label describes a relation, the inverse property should describe the inverse relation.
  • Only used when a property has data type = item
  • Generates a label in the pages the item refers to.

Inverse property (P58) !avoid!

  • It is preferable to use an inverse property label in stead of an inverse property. Only to be used when it is obvious that a relation can be described from both sides.
  • Should reflect the opposite of the property, in other words, if a label describes a relation, the inverse property should describe the inverse relation.
  • Only used when a property has data type = item
  • Generates a label in the pages the item refers to.

Property order* (P98)

  • A number that defines the order of presentation of the properties.
  • Becomes active only after a reset of the system

Property visible (P97)

  • Used to limit the visibility of a property for the public.
  • Possible values are
    • Public
    • Logged in
  • If the property is not available, we assume the property is public.

Property usage instruction (P51)

  • Provides instructions to users on how to use the property

Property expected value (P52)

  • Describes (in text) what values are expected.

Property expected value list (P119)

  • Link to item that lists expected values
  • For good functioning add also P135 to each item referred to
    • (Pro memori: Related property (P235))
    • Refers in an item that contains a value list to the property the values can be used for.
    • For good functioning this needs to be added to each item that is referred to by P119

Property note (P42)

  • Provides notes or remarks on functioning to developers.

Wikidata property (P96)

  • Refers to the equivalent Wikidata property
  • If the relation is not exact, add a qualifier [context] to describe the relation.

Subproperty of (P57)

  • Refers to a property that has a wider scope

Complementary property (P94)

  • Refers to a property, that can be used together with this one to create for example timelines. (start-end dates.)

Property obligatory qualifier (P99)

  • Qualifier that is needed for the proper functioning of a property

Formatter URL (P12)

  • Use only for links to external databases or websites that use a unique identifier in a standardized URL.
  • Defines the URL structure for external identifiers.

Property maintained by (P282)

  • Refers to the person or organisation that is using or maintaining this property.
  • Mostly used for service properties
  • Do not change anything without discussion with maintainer.

System characteristic (P131)

Property for observing property structure

Properties by datatypes

Monolingual text

https://tinyurl.com/28xg9w7z

External text

https://tinyurl.com/2axwsadt

CanonBase item

Wikidata