# Class: PropertyValue
_A generic tag-value that can be associated with an association._
URI: [ontoassoc:PropertyValue](https://w3id.org/oak/association/PropertyValue)
```{mermaid}
classDiagram
class PropertyValue
PropertyValue : object
PropertyValue : predicate
```
## Slots
| Name | Cardinality and Range | Description | Inheritance |
| --- | --- | --- | --- |
| [predicate](predicate.md) | 0..1
[Uriorcurie](Uriorcurie.md) | The type of relationship between the subject and object | direct |
| [object](object.md) | 0..1
[Uriorcurie](Uriorcurie.md) | An ontology entity that is associated with the subject | direct |
## Usages
| used by | used in | type | used |
| --- | --- | --- | --- |
| [PositiveOrNegativeAssociation](PositiveOrNegativeAssociation.md) | [property_values](property_values.md) | range | [PropertyValue](PropertyValue.md) |
| [Association](Association.md) | [property_values](property_values.md) | range | [PropertyValue](PropertyValue.md) |
| [NegatedAssociation](NegatedAssociation.md) | [property_values](property_values.md) | range | [PropertyValue](PropertyValue.md) |
## Identifier and Mapping Information
### Schema Source
* from schema: https://w3id.org/oak/association
## Mappings
| Mapping Type | Mapped Value |
| --- | --- |
| self | ontoassoc:PropertyValue |
| native | ontoassoc:PropertyValue |
## LinkML Source
### Direct
```yaml
name: PropertyValue
description: A generic tag-value that can be associated with an association.
from_schema: https://w3id.org/oak/association
slots:
- predicate
- object
```
### Induced
```yaml
name: PropertyValue
description: A generic tag-value that can be associated with an association.
from_schema: https://w3id.org/oak/association
attributes:
predicate:
name: predicate
description: The type of relationship between the subject and object.
from_schema: https://w3id.org/oak/association
rank: 1000
slot_uri: rdf:predicate
alias: predicate
owner: PropertyValue
domain_of:
- PositiveOrNegativeAssociation
- PropertyValue
slot_group: core_triple
range: uriorcurie
object:
name: object
description: An ontology entity that is associated with the subject.
comments:
- it is conventional for the subject to be the "entity" and the object to be the
ontological descriptor
from_schema: https://w3id.org/oak/association
exact_mappings:
- oa:hasTarget
rank: 1000
slot_uri: rdf:object
alias: object
owner: PropertyValue
domain_of:
- PositiveOrNegativeAssociation
- PropertyValue
slot_group: core_triple
range: uriorcurie
```