Template:Tree properties

Template documentation

This template lists some major properties can be used to make tree-like structure.

Properties are roughly categorized into two sections.

Vertical section

The first section, vertical relations, lists the properties which are applicable repeatedly to generate sequence, order, chain. This means, for example,

• it is possible to say that A is part of B, B is part of C, C is part of D, D is part of... repeatedly.

As another example,

• it is possible to say that A is mother of B, B is mother of C, C is mother of D, D is mother of... repeatedly.

These properties are basic properties which are used to generate tree shaped structure.

Horizontal section

The second section, horizontal relations, lists the properties which are used supplementally to make tree-like structure. For example, properties which can not be applied repeatedly but can be used to make tree. Spouse is such relation. "One's spouse's spouse" is generally oneself.

At the same time, this section also includes "identity" type relations. Identity means "A and B is same thing". This happens, for example, in items which use claim permanent duplicated item (P2959) (overview is available at here User:Nikki/Permanent_duplicates). In such case, data which you need to construct tree located sometimes at item A, but sometimes at item B. To avoid tree disconnection, forcing program to check both items A and B is a good option for making the tree construction more stable.

See also

• Help:Tree
• Help:Basic membership properties
• Wikidata:WikiProject Ontology