Property talk:P1819

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genealogics.org person ID
identifier for a person at genealogics.org. Format: "I" followed by 8 digits.

Description	Genealogics.org is a genealogy database by Leo van de Pas containing over half a million persons (source) built during 25 years. Please read this interesting explanation.
Represents	Genealogics (Q19847326)
Associated item	Genealogics (Q19847326)
Data type	External identifier
Domain	According to this template: human (Q5) According to statements in the property: human (Q5) When possible, data should only be stored as statements
Allowed values	I\d{8} (string starting with 'I' followed by 8 digits)
Example	Charlemagne (Q3044) → I00000001 William the Conqueror (Q37594) → I00000002 Leo van de Pas (Q19847329) → I00071584 Nicolaes Tulp (Q630646) → I00077116
Formatter URL	https://www.genealogics.org/getperson.php?personID=$1&tree=LEO
Lists	<items with the most statements of this property> Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the most identifier properties Items with no other external identifier Items with no other statements <most recently created items> Items with novalue claims Items with unknown value claims Usage history Chart by item creation date Mix'n'match (Report) Database reports/Humans with missing claims/P1819 Database reports/Constraint violations/P1819 <random list>
Proposal discussion	Proposal discussion
Current uses	30,118 out of 725,642 (4% complete)
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Single value: this property generally contains a single value. (Help) Exceptions are possible as rare values may exist. List of this constraint violations: Database reports/Constraint violations/P1819#Single value, SPARQL, SPARQL (new)

Distinct values: this property likely contains a value that is different from all other items. (Help) List of this constraint violations: Database reports/Constraint violations/P1819#Unique value, hourly updated report, SPARQL (every item), SPARQL (by value), SPARQL (new)

Format “I\d{8}”: value must be formatted using this pattern (PCRE syntax). (Help) List of this constraint violations: Database reports/Constraint violations/P1819#Format, hourly updated report, SPARQL, SPARQL (new)

Type “human (Q5)”: element must contain property “instance of (P31)” with classes “human (Q5)” or their subclasses (defined using subclass of (P279)). (Help) List of this constraint violations: Database reports/Constraint violations/P1819#type Q5, hourly updated report, SPARQL, SPARQL (new)

Item “sex or gender (P21)”: Items with this property should also have “sex or gender (P21)”. (Help) Exceptions are possible as rare values may exist. List of this constraint violations: Database reports/Constraint violations/P1819#Item P21, search, SPARQL, SPARQL (new)

Item “date of birth (P569)”: Items with this property should also have “date of birth (P569)”. (Help) Exceptions are possible as rare values may exist. List of this constraint violations: Database reports/Constraint violations/P1819#Item P569, SPARQL, SPARQL (new)

Scope is as main value (Q54828448), as references (Q54828450): the property must be used by specified way only (Help) List of this constraint violations: Database reports/Constraint violations/P1819#scope, hourly updated report, SPARQL, SPARQL (new)