---
layout: page
title: "Schema"
node_type: "nodetool.data.Schema"
namespace: "nodetool.data"
---

**Type:** `nodetool.data.Schema`

**Namespace:** `nodetool.data`

## Description

Define a schema for a dataframe.
    schema, dataframe, create

## Properties

| Property | Type | Description | Default |
|----------|------|-------------|---------|
| columns | `record_type` | The columns to use in the dataframe. | `{"type":"record_type","columns":[]}` |

## Outputs

| Output | Type | Description |
|--------|------|-------------|
| output | `record_type` |  |

## Related Nodes

Browse other nodes in the [nodetool.data](../) namespace.
