Property:Date of birth

Refers to the date of birth of a person. warning.pngOnly pages in namespace "" are allowed here.

In SMW 0.5, the range is only from 1901-12-14 to 2038-1-19, see Type:Date.

This property and Property:Year of birth are implied by Property:Date of birth sortkey, and overlap other properties including Property:Birthday. Improvements to type:Date and date support in queries may change the situation, but for now they all have different behavior and benefits.

You can conveniently add all these properties using Template:b (talk, backlinks, edit), e.g. {{subst:b|1993|1|26|subst=subst:}}, which in turn can be produced by Template:b1 (talk, backlinks, edit) with {{b1|1993|1|26}} giving {{subst:b|subst=subst:|1993|1|26}}. See also Date-related tables.

<ask sort="date of birth" order=desc>+**warning.png"*" is not a number.*</ask>

Note: this attribute exists, but the rest of this is a proposal by User:MovGP0 and not implemented.

A possible future implementation need also respect sharp and fuzzy information like:

• "born at Dec. the 4th 1388" (sharp), or
• "born between 1386 and 1390". This is needed

This could look like:

[[born::(min:=1388, max:=1390)]]

or, alternative like:

[[born::1388..1390]]

Note: don't use '-' because we need also negative Years in History

Sharp Date:

[[born::13/7/1950]]

[edit] Age

The age is a calculated Property and, due to its dynamic manner, not to implement as a static Attribute. A possible solution might be to have the calculation function in use as a delegate.

[[Age::getAge(Property:born)]]

Another thing where we need Age is when describing aging. Pregnancy for example is divided into three Trimesters:

• 1st Pregnancy-Trimenon = Week 1 till 13
• 2nd Pregnancy-Trimenon = Week 14 till 26
• 3rd Pregnancy-Trimenon = Week 27 till 40

[edit] See also

• Property:Date of death
• wikipedia:Wikipedia:Biographies of living persons#Privacy of birthdays.