---
title: "SourceColumn"
description: "one column of a table of a read artefact, as the engine names it"
section: concepts
address: /concepts/sourcecolumn
contract: 0476e35e6e275db5
---

# SourceColumn

one column of a table of a read artefact, as the engine names it

[figure: SourceColumn is a value at none scope. The drawing shows its fields and the objects that they point at.]

| property | value |
|---|---|
| kind | value |
| scope | none |
| key | none |
| store | none |
| family | sources |



## Fields


| field | type | required | note |
|---|---|---|---|
| `name` | `text` | yes |  |
| `type` | `text` | yes | as the engine names it, such as VARCHAR or decimal128(2, 1) |
| `nullable` | `bool` | no | absent when the reading did not record it |



## Routes that use it
No route takes or returns SourceColumn directly. The record holds it, and the objects that point at it reach it.