RedcapDate
search: boost: 1.0 ---# Type: RedcapDate
A REDCap date_ymd value (YYYY-MM-DD) or an empty string.
URI: [xsd:string](http://www.w3.org/2001/XMLSchema#string)
## Type Properties
| Property | Value |
| --- | --- |
| Type Of | [String](String.md) |
| Base | `str` |
| Type URI | [xsd:string](http://www.w3.org/2001/XMLSchema#string) |
## Value Constraints
| Property | Value |
| --- | --- |
| Regex Pattern | `^(\d{4}-\d{2}-\d{2}|)$` |
## Identifier and Mapping Information
### Schema Source
* from schema: https://w3id.org/linkml/redcap-record
## Mappings
| Mapping Type | Mapped Value |
| --- | --- |
| self | xsd:string |
| native | redcap_record:redcap_date |