# Data IO

Choose a node to view its purpose and configuration.

| Node | Purpose |
| --- | --- |
| [Read MOI Table](read-table.md) | Read a table into rows keyed by column name. |
| [Read MOI Volume](read-volume.md) | Select files for parsing or import. |
| [Save to MOI Table](save-table.md) | Write a structured object or batch of rows to a table. |
| [Save to MOI Volume](save-volume.md) | Save documents, rows, text, or JSON to a volume. |
| [Export Externally](export.md) | Send data to an external system over HTTP. |

```{toctree}
:hidden:
:maxdepth: 1

Read MOI Table <read-table>
Read MOI Volume <read-volume>
Save to MOI Table <save-table>
Save to MOI Volume <save-volume>
Export Externally <export>
```