# Class: TableSchema 


_A Frictionless Table Schema document — the column descriptors for a single tabular resource._





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





```mermaid
 classDiagram
    class TableSchema
    click TableSchema href "../TableSchema/"
      TableSchema : fields
        
          
    
        
        
        TableSchema --> "1..*" Field : fields
        click Field href "../Field/"
    

        
      TableSchema : foreignKeys
        
          
    
        
        
        TableSchema --> "*" ForeignKey : foreignKeys
        click ForeignKey href "../ForeignKey/"
    

        
      TableSchema : missingValues
        
      TableSchema : primaryKey
        
      
```




<!-- no inheritance hierarchy -->

## Class Properties

| Property | Value |
| --- | --- |
| Tree Root | Yes |


## Slots

| Name | Cardinality and Range | Description | Inheritance |
| ---  | --- | --- | --- |
| [fields](fields.md) | 1..* <br/> [Field](Field.md) | Ordered list of field (column) descriptors | direct |
| [missingValues](missingValues.md) | * <br/> [String](String.md) | String values to interpret as missing data when reading the tabular resource | direct |
| [primaryKey](primaryKey.md) | * <br/> [String](String.md) | Field name(s) that together identify each row | direct |
| [foreignKeys](foreignKeys.md) | * <br/> [ForeignKey](ForeignKey.md) | Foreign key constraints linking fields in this resource to fields in another ... | direct |















## Identifier and Mapping Information





### Schema Source


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




## Mappings

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






## LinkML Source

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

### Direct

<details>
```yaml
name: TableSchema
description: A Frictionless Table Schema document — the column descriptors for a single
  tabular resource.
from_schema: https://specs.frictionlessdata.io/table-schema
attributes:
  fields:
    name: fields
    description: Ordered list of field (column) descriptors.
    from_schema: https://specs.frictionlessdata.io/table-schema
    rank: 1000
    domain_of:
    - TableSchema
    - ForeignKey
    - ForeignKeyReference
    range: Field
    required: true
    multivalued: true
    inlined: true
    inlined_as_list: true
  missingValues:
    name: missingValues
    description: String values to interpret as missing data when reading the tabular
      resource. Default is the empty string.
    from_schema: https://specs.frictionlessdata.io/table-schema
    rank: 1000
    domain_of:
    - TableSchema
    range: string
    multivalued: true
  primaryKey:
    name: primaryKey
    description: Field name(s) that together identify each row. May be a single name
      (string) or a list; modeled as a list here.
    from_schema: https://specs.frictionlessdata.io/table-schema
    rank: 1000
    domain_of:
    - TableSchema
    range: string
    multivalued: true
  foreignKeys:
    name: foreignKeys
    description: Foreign key constraints linking fields in this resource to fields
      in another resource.
    from_schema: https://specs.frictionlessdata.io/table-schema
    rank: 1000
    domain_of:
    - TableSchema
    range: ForeignKey
    multivalued: true
    inlined: true
    inlined_as_list: true
tree_root: true

```
</details>

### Induced

<details>
```yaml
name: TableSchema
description: A Frictionless Table Schema document — the column descriptors for a single
  tabular resource.
from_schema: https://specs.frictionlessdata.io/table-schema
attributes:
  fields:
    name: fields
    description: Ordered list of field (column) descriptors.
    from_schema: https://specs.frictionlessdata.io/table-schema
    rank: 1000
    alias: fields
    owner: TableSchema
    domain_of:
    - TableSchema
    - ForeignKey
    - ForeignKeyReference
    range: Field
    required: true
    multivalued: true
    inlined_as_list: true
  missingValues:
    name: missingValues
    description: String values to interpret as missing data when reading the tabular
      resource. Default is the empty string.
    from_schema: https://specs.frictionlessdata.io/table-schema
    rank: 1000
    alias: missingValues
    owner: TableSchema
    domain_of:
    - TableSchema
    range: string
    multivalued: true
  primaryKey:
    name: primaryKey
    description: Field name(s) that together identify each row. May be a single name
      (string) or a list; modeled as a list here.
    from_schema: https://specs.frictionlessdata.io/table-schema
    rank: 1000
    alias: primaryKey
    owner: TableSchema
    domain_of:
    - TableSchema
    range: string
    multivalued: true
  foreignKeys:
    name: foreignKeys
    description: Foreign key constraints linking fields in this resource to fields
      in another resource.
    from_schema: https://specs.frictionlessdata.io/table-schema
    rank: 1000
    alias: foreignKeys
    owner: TableSchema
    domain_of:
    - TableSchema
    range: ForeignKey
    multivalued: true
    inlined_as_list: true
tree_root: true

```
</details>