Property talk:P397

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DOI
serial code used to uniquely identify digital objects like academic papers (use upper case letters only)
Data typeExternal identifier
Allowed values10\.\d{4,9}/.+ (Syntax described at http://www.doi.org/doi_handbook/2_Numbering.html#2.2 does not specify case. Uppercase recommended.)
(?i)10.\d{4,9}/[-._;()/:A-Z0-9]+ (The regular expression syntax described for "modern Crossref DOIs" by Andrew Gilmartin, a member of the U.S. Crossref team. Matches 74.4 million of the 74.9 million DOIs in Crossref.)
(?i)10.\d{4,9}/[^\s]+ (Syntax described by Andrew Gilmartin (member of the U.S. Crossref team) for early DOIs (catches approximately 300,000 more DOIs than the "modern Crossref DOI" regular expression). Escape character added to avoid malformed input error.)
Formatter URLhttps://doi.org/$1
info:doi/$1
Lists
Proposal discussionOriginally created without a formal discussion
Search for values
[create Create a translatable help page (preferably in English) for this property to be included here]
Format “(10\.[0-9]{4,}(?:\.[0-9]+)*/(?:(?!["&'])\S)+)|: value must be formatted using this pattern (PCRE syntax).
Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P397#Format, SPARQL
Single value: this property generally contains a single value.
Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P397#Single value, SPARQL
Distinct values: this property likely contains a value that is different from all other items.
Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P397#Unique value, SPARQL (every item), SPARQL (by value)
Qualifiers “reason for deprecated rank (P344), issued by (P214), reason for preferred rank (P345): this property should be used only with the listed qualifiers.
Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P397#Allowed qualifiers, SPARQL

constraint “conflicts-with constraint (Q798)” declaration error: “incorrect value of property “constraint status (P286)”, acceptable values are: “mandatory constraint (Q678)””.

Conflicts with “occupation (P6): this property must not be used with the listed properties and values.
Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P397#Conflicts with, search, SPARQL
Conflicts with “subclass of (P12): this property must not be used with the listed properties and values.
Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P397#Conflicts with, search, SPARQL
Format “(?i)((?!\b(%)).)*: value must be formatted using this pattern (PCRE syntax).
Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P397#Format, SPARQL
Format “(?i)((?!\b(&)).)*: value must be formatted using this pattern (PCRE syntax).
Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P397#Format, SPARQL

constraint “format constraint (Q673)” declaration error: “incorrect value of property “constraint status (P286)”, acceptable values are: “mandatory constraint (Q678)””.

Format “[^a-z]*: value must be formatted using this pattern (PCRE syntax).
Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P397#Format, SPARQL
Allowed entity types are Wikibase item datatype (Q799): the property may only be used on a certain entity type
Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P397#allowed entity types
Scope is as main value (Q793), as qualifier (Q792), as reference (Q780): the property must be used by specified way only
Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P397#scope, SPARQL