Property talk:P4409

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Baseball Almanac ID
identifier for a player on the Baseball Almanac website

Applicable "stated in" value	Baseball Almanac (Q4866428)
Data type	External identifier
Allowed values	[a-z0-9]+
Example	Marlon Anderson (Q16150216) → anderma02 Dovydas Neverauskas (Q29043645) → neverdo01
Source	https://www.baseball-almanac.com/players/birthplace.php
Formatter URL	https://www.baseball-almanac.com/players/player.php?p=$1
Tracking: usage	Category:Pages using Wikidata property P4409 (Q42301889)
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 fewest sitelinks Most linked wikis 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 (total) Usage history (main statement) Chart by item creation date Map of people by place values: place of birth educated at work location residence place of death place of burial January 1st dates People with date of birth on January 1 People with date of death on January 1 People with both dates on January 1 Database reports/Constraint violations/P4409 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 1,319 Main statement 1,312 99.5% of uses Qualifier 2 0.2% of uses Reference 5 0.4% of uses
Search for values

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Distinct values: this property likely contains a value that is different from all other items. (Help)

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/P4409#Unique value, SPARQL (every item), SPARQL (by value)

Single value: this property generally contains a single value. (Help)

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/P4409#Single value, SPARQL

Item “instance of (P31): human (Q5)”: Items with this property should also have “instance of (P31): human (Q5)”. (Help)

List of violations of this constraint: Database reports/Constraint violations/P4409#Item P31, hourly updated report, search, SPARQL

Item “occupation (P106): baseball player (Q10871364), professional baseball player (Q11336312)”: Items with this property should also have “occupation (P106): baseball player (Q10871364), professional baseball player (Q11336312)”. (Help)

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/P4409#Item P106, search

Format “[a-z0-9]+”: value must be formatted using this pattern (PCRE syntax). (Help)

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/P4409#Format, SPARQL

Item “occupation (P106)”: Items with this property should also have “occupation (P106)”. (Help)

List of violations of this constraint: Database reports/Constraint violations/P4409#Item P106, hourly updated report, search, SPARQL

Allowed entity types are Wikibase item (Q29934200): the property may only be used on a certain entity type (Help)

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/P4409#Entity types

Scope is as main value (Q54828448), as reference (Q54828450): the property must be used by specified way only (Help)

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/P4409#Scope, SPARQL

Item “sport (P641): baseball (Q5369)”: Items with this property should also have “sport (P641): baseball (Q5369)”. (Help)

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/P4409#Item P641, search, SPARQL