Property talk:P9902

Documentation

• Start a query
• Current uses
• Statistics by class
• String length
• List of qualifiers
• Count

Materials Project material ID
identifier for a material in the Materials Project

Applicable "stated in" value	Materials Project (Q105085929)
Data type	External identifier
Domain	chemical compound (Q11173)
Allowed values	mp-[1-9]\d*
Example	vanadium(IV) oxide (Q421440) → mp-19094 vanadium(IV) oxide (Q421440) → mp-1102963 iron boride (Q15628122) → mp-1915
Source	https://materialsproject.org/#search/materials/
Formatter URL	https://materialsproject.org/materials/$1/
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/P9902 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 4 Main statement 1 out of 144,595 (0% complete) 25% of uses Qualifier 3 75% of uses
Search for values

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

Type “chemical compound (Q11173)”: item must contain property “instance of (P31)” with classes “chemical compound (Q11173)” 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/P9902#Type Q11173, 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/P9902#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/P9902#Single value, SPARQL

Format “mp-[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/P9902#Format, SPARQL

Qualifiers “space group (P690)”: this property should be used only with the listed qualifiers. (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/P9902#allowed qualifiers, SPARQL

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/P9902#Scope, 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/P9902#Entity types