Slot: required¶
Whether the field must have a value in every row. An empty string is considered missing per Frictionless conventions.
URI: fts:required Alias: required
Applicable Classes¶
Name |
Description |
Modifies Slot |
|---|---|---|
Validation constraints attached to a field |
no |
Properties¶
Type and Range¶
Property |
Value |
|---|---|
Range |
|
Domain Of |
Cardinality and Requirements¶
Property |
Value |
|---|
Slot Characteristics¶
Property |
Value |
|---|---|
Owner |
Identifier and Mapping Information¶
Schema Source¶
from schema: https://specs.frictionlessdata.io/table-schema
Mappings¶
Mapping Type |
Mapped Value |
|---|---|
self |
fts:required |
native |
fts:required |
LinkML Source¶
```yaml
name: required
description: Whether the field must have a value in every row. An empty string is
considered missing per Frictionless conventions.
from_schema: https://specs.frictionlessdata.io/table-schema
rank: 1000
alias: required
owner: Constraints
domain_of:
- Constraints
range: boolean
</details>