Property talk:P3991

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Austrian Textbook ID
identifier used for textbooks in Austria that are allowed to be used in public schools

Description	This identifier is used for textbooks in Austria that are allowed to be used in public schools.
Data type	External identifier
Domain	work (Q386724)
Allowed values	\d+
Example	Szia! Hungarian for beginners, Textbook (Q29033726) → 120578
Source	http://schulbuchsuche.bmb.gv.at/
Related to country	Austria (Q40) (See 81 others)
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) Database reports/Constraint violations/P3991 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 2 Main statement 1 50% of uses Qualifier 1 50% of uses
Search for values

[create Create a translatable help page (preferably in English) for this property to be included here]

Type “work (Q386724)”: item must contain property “instance of (P31)” with classes “work (Q386724)” or their subclasses (defined using subclass of (P279)). (Help)

List of violations of this constraint: Database reports/Constraint violations/P3991#Type Q386724, hourly updated report, SPARQL

Format “\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/P3991#Format, 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/P3991#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/P3991#Unique value, SPARQL (every item), SPARQL (by value)

Item “author (P50)”: Items with this property should also have “author (P50)”. (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/P3991#Item P50, search, SPARQL

Item “title (P1476)”: Items with this property should also have “title (P1476)”. (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/P3991#Item P1476, 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/P3991#Entity types