Slot: unique_keys
A collection of named unique keys for this class. Unique keys may be singular or compound.
URI: [linkml:unique_keys](https://w3id.org/linkml/unique_keys)
## Applicable Classes
| Name | Description | Modifies Slot |
| --- | --- | --- |
| [ClassDefinition](ClassDefinition.md) | an element whose instances are complex objects that may have slot-value assig... | no |
## Properties
### Type and Range
| Property | Value |
| --- | --- |
| Range | [UniqueKey](UniqueKey.md) |
| Domain | [ClassDefinition](ClassDefinition.md) |
| Domain Of | [ClassDefinition](ClassDefinition.md) |
### Cardinality and Requirements
| Property | Value |
| --- | --- |
| Multivalued | Yes |
## In Subsets
* [SpecificationSubset](SpecificationSubset.md)
* [BasicSubset](BasicSubset.md)
* [RelationalModelProfile](RelationalModelProfile.md)
## See Also
* [https://linkml.io/linkml/schemas/constraints.html#unique-key](https://linkml.io/linkml/schemas/constraints.html#unique-key)
## Identifier and Mapping Information
### Schema Source
* from schema: https://w3id.org/linkml/meta
## Mappings
| Mapping Type | Mapped Value |
| --- | --- |
| self | linkml:unique_keys |
| native | linkml:unique_keys |
| exact | owl:hasKey |
## LinkML Source
name: unique_keys
description: A collection of named unique keys for this class. Unique keys may be
singular or compound.
in_subset:
- SpecificationSubset
- BasicSubset
- RelationalModelProfile
from_schema: https://w3id.org/linkml/meta
see_also:
- https://linkml.io/linkml/schemas/constraints.html#unique-key
exact_mappings:
- owl:hasKey
rank: 1000
domain: class_definition
domain_of:
- class_definition
range: unique_key
multivalued: true
inlined: true