---
title: DatasetSchemaProperty
seo:
  title: DatasetSchemaProperty — Python SDK
  description: A single dataset column declaration. (Python SDK)
description: A single dataset column declaration.
---

`type` is a JSON Schema primitive (`"string"`, `"integer"`,
`"number"`, `"boolean"`, `"array"`, `"object"`) or the Judgment
pointer type `"trace"` (value is a trace id).

## Attributes

| Prop | Type | Default | Description |
| - | - | - | - |
| `type?` | `DatasetColumnType` | - | |