Property talk:P4961

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Documentation

Sega8bit.com ID
identifier in the Sega8bit.com database of Master System video games
[create Create a translatable help page (preferably in English) for this property to be included here]
Type “video game (Q7889), video game compilation (Q16070115): item must contain property “instance of (P31)” with classes “video game (Q7889), video game compilation (Q16070115)” or their subclasses (defined using subclass of (P279)). (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/P4961#Type Q7889, Q16070115, SPARQL
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/P4961#Single value, SPARQL
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/P4961#Unique value, SPARQL (every item), SPARQL (by value)
Format “[1-9]\d*: 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/P4961#Format, SPARQL
Item “platform (P400): Sega Master System (Q209868): Items with this property should also have “platform (P400): Sega Master System (Q209868)”. (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/P4961#Item P400, search, SPARQL
Item “Guardiana ID (P4710): Items with this property should also have “Guardiana ID (P4710)”. (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/P4961#Item P4710, 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/P4961#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/P4961#Scope, SPARQL

Master System games without P4961

[edit]
SELECT ?item ?itemLabel ?publication_date ?identifier WHERE {
  ?item wdt:P31 wd:Q7889.
  ?item wdt:P400 wd:Q209868.
  OPTIONAL { ?item wdt:P577 ?publication_date. }
  OPTIONAL { ?item wdt:P4961 ?identifier. }
  MINUS { ?item wdt:P4961 _:b5. }
  SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
}
Try it!