Wikibase system ontology
type: Ontology
comment: The system ontology of Wikibase

Dump
type: Class
comment: A dump of wikidata content.

Entity
type: Class
comment: Wikibase entity.

Item
type: Class
comment: Wikibase item.
subclass of: Entity

Property
type: Class
comment: Wikibase property.
subclass of: Entity

Statement
type: Class
comment: A reified statement.

Reference
type: Class
comment: A reference to sources supporting the claim.

Value
type: Class
comment: Wikibase extended value.

PropertyType
type: Class
comment: Type of a wikibase property.

Rank
type: Class
comment: Wikibase statement rank.

BestRank
type: Class
comment: This class marks statement that has the best rank for its property.

QuantityValue
type: Class
comment: Wikibase extended value representing quantity.
subclass of: Value

TimeValue
type: Class
comment: Wikibase extended value representing time.
subclass of: Value

GlobecoordinateValue
type: Class
comment: Wikibase extended value representing geographic coordinate.
subclass of: Value

GeoAutoPrecision
type: Class
comment: This coordinate value uses automatic precision since the user did not specify one.

DeprecatedRank
type: NamedIndividual
comment: Deprecated statement rank.
type: Rank

NormalRank
type: NamedIndividual
comment: Normal statement rank.
type: Rank

PreferredRank
type: NamedIndividual
comment: Preferred statement rank.
type: Rank

CommonsMedia
type: NamedIndividual
comment: Wikimedia Commons reference type.
type: PropertyType

WikibaseExternalId
type: NamedIndividual
comment: Type for referring to ID defined by external authority.
type: PropertyType

Globecoordinate
type: NamedIndividual
comment: Coordinate type.
type: PropertyType

Monolingualtext
type: NamedIndividual
comment: Type for text in single language.
type: PropertyType

Quantity
type: NamedIndividual
comment: Type for numerical quantity.
type: PropertyType

String
type: NamedIndividual
comment: Basic string type.
type: PropertyType

Time
type: NamedIndividual
comment: Date and time value type.
type: PropertyType

Url
type: NamedIndividual
comment: URL link type.
type: PropertyType

WikibaseEntityid
type: NamedIndividual
comment: Type for referring to another Wikibase entity.
type: PropertyType

Mathematial expression
type: NamedIndividual
comment: Type for mathematical expressions as supported by the Math extension.
type: PropertyType

rank
type: ObjectProperty
comment: Statement rank.
range: Rank
domain: Statement

badge
type: ObjectProperty
comment: Badge on the Wiki page.
range: Item

directClaim
type: ObjectProperty
comment: Link between Wikibase Property and direct claim predicate.
domain: Property

claim
type: ObjectProperty
comment: Link between Wikibase Property and claim predicate.
domain: Property

statementProperty
type: ObjectProperty
comment: Link between Wikibase Property and statement property predicate.
domain: Property

statementValue
type: ObjectProperty
comment: Link between Wikibase Property and statement value predicate.
domain: Property

qualifier
type: ObjectProperty
comment: Link between Wikibase Property and qualifier predicate.
domain: Property

qualifierValue
type: ObjectProperty
comment: Link between Wikibase Property and qualifier value predicate.
domain: Property

reference
type: ObjectProperty
comment: Link between Wikibase Property and reference predicate.
domain: Property

referenceValue
type: ObjectProperty
comment: Link between Wikibase Property and reference value predicate.
domain: Property

novalue
type: ObjectProperty
comment: Link between Wikibase Property and no value class.
domain: Property

geoGlobe
type: ObjectProperty
comment: Globe reference URL.
domain: GlobecoordinateValue
range: Item

geoLatitude
type: DatatypeProperty
comment: Coordinate latitude.
domain: GlobecoordinateValue
range: decimal

geoLongitude
type: DatatypeProperty
comment: Coordinate longitude.
domain: GlobecoordinateValue
range: decimal

geoPrecision
type: DatatypeProperty
comment: Coordinate precision.
domain: GlobecoordinateValue
range: decimal

quantityAmount
type: DatatypeProperty
comment: Amount of quantity.
domain: QuantityValue
range: decimal

quantityLowerBound
type: DatatypeProperty
comment: Lower bound of the value.
domain: QuantityValue
range: decimal

quantityUpperBound
type: DatatypeProperty
comment: Upper bound of the value.
domain: QuantityValue
range: decimal

quantityUnit
type: ObjectProperty
comment: Unit of measurement.
domain: QuantityValue
range: Item

timeCalendarModel
type: ObjectProperty
comment: Preferred calendar used to display this date to the user.
domain: TimeValue
range: Item

timePrecision
type: DatatypeProperty
comment: Datetime precision.
domain: TimeValue
range: nonNegativeInteger

timeTimezone
type: DatatypeProperty
comment: Timezone offset from UTC in minutes.
domain: TimeValue
range: decimal

timeValue
type: DatatypeProperty
comment: Time value as datetime literal.
domain: TimeValue
range: dateTime

wikiGroup
type: DatatypeProperty
comment: Wiki group that the site belongs to.