# Class: ForeignKeyReference 


_The target side of a foreign-key constraint._





URI: [fts:ForeignKeyReference](https://specs.frictionlessdata.io/table-schema/ForeignKeyReference)





```mermaid
 classDiagram
    class ForeignKeyReference
    click ForeignKeyReference href "../ForeignKeyReference/"
      ForeignKeyReference : fields
        
      ForeignKeyReference : resource
        
      
```




<!-- no inheritance hierarchy -->

## Slots

| Name | Cardinality and Range | Description | Inheritance |
| ---  | --- | --- | --- |
| [resource](resource.md) | 0..1 <br/> [String](String.md) | Name of the resource being referenced | direct |
| [fields](fields.md) | 1..* <br/> [String](String.md) | Field name(s) in the target resource that the key references | direct |





## Usages

| used by | used in | type | used |
| ---  | --- | --- | --- |
| [ForeignKey](ForeignKey.md) | [reference](reference.md) | range | [ForeignKeyReference](ForeignKeyReference.md) |












## Identifier and Mapping Information





### Schema Source


* from schema: https://specs.frictionlessdata.io/table-schema




## Mappings

| Mapping Type | Mapped Value |
| ---  | ---  |
| self | fts:ForeignKeyReference |
| native | fts:ForeignKeyReference |






## LinkML Source

<!-- TODO: investigate https://stackoverflow.com/questions/37606292/how-to-create-tabbed-code-blocks-in-mkdocs-or-sphinx -->

### Direct

<details>
```yaml
name: ForeignKeyReference
description: The target side of a foreign-key constraint.
from_schema: https://specs.frictionlessdata.io/table-schema
attributes:
  resource:
    name: resource
    description: Name of the resource being referenced. Empty string refers to the
      current resource (self-reference).
    from_schema: https://specs.frictionlessdata.io/table-schema
    rank: 1000
    domain_of:
    - ForeignKeyReference
    range: string
  fields:
    name: fields
    description: Field name(s) in the target resource that the key references.
    from_schema: https://specs.frictionlessdata.io/table-schema
    domain_of:
    - TableSchema
    - ForeignKey
    - ForeignKeyReference
    range: string
    required: true
    multivalued: true

```
</details>

### Induced

<details>
```yaml
name: ForeignKeyReference
description: The target side of a foreign-key constraint.
from_schema: https://specs.frictionlessdata.io/table-schema
attributes:
  resource:
    name: resource
    description: Name of the resource being referenced. Empty string refers to the
      current resource (self-reference).
    from_schema: https://specs.frictionlessdata.io/table-schema
    rank: 1000
    alias: resource
    owner: ForeignKeyReference
    domain_of:
    - ForeignKeyReference
    range: string
  fields:
    name: fields
    description: Field name(s) in the target resource that the key references.
    from_schema: https://specs.frictionlessdata.io/table-schema
    alias: fields
    owner: ForeignKeyReference
    domain_of:
    - TableSchema
    - ForeignKey
    - ForeignKeyReference
    range: string
    required: true
    multivalued: true

```
</details>