> ## Documentation Index
> Fetch the complete documentation index at: https://docs.mage.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Configure data integration pipelines

> There are many ways to configure your data integration pipeline.

<Frame>
  <img alt="Configure data integrations" src="https://media3.giphy.com/media/v1.Y2lkPTc5MGI3NjExNnFzZnZudjd1OGNnbmgxMmZjZm1pdHBoeTRmdzFwaWhmN2VicjRuaCZlcD12MV9pbnRlcm5hbF9naWZfYnlfaWQmY3Q9Zw/rMGDB5lVFWg9O/giphy.gif" />
</Frame>

## Interpolation

You can interpolate pipeline variables, environment variables, secrets, and more into the source
config file, schema settings, and destination config file.

### Pipeline variables

```
{{ variables('variable_name') }}
```

#### Variable names

You can add your own custom variables to the pipeline. For more information,
read the [documentation](/getting-started/runtime-variable#using-runtime-variables).

Here are the default variables available to interpolate:

| Name                  | Description                                                                      | Sample value      |
| --------------------- | -------------------------------------------------------------------------------- | ----------------- |
| `pipeline.name`       | Name of the current pipeline.                                                    | `ETL demo`        |
| `pipeline.uuid`       | UUID of the current pipeline.                                                    | `etl_demo`        |
| `ds`                  | Execution date string.                                                           | `2023-12-25`      |
| `hr`                  | Execution hour string from `00` to `23`.                                         | `12`              |
| `env`                 | Environment Mage is running in.                                                  | `dev`, `prod`     |
| `execution_partition` | The current partition of the execution: datetime in this format `%Y%m%dT%H%M%S`. | `20231225T122520` |

### Common prefixes

Mage supports table prefixes for integration sources. To add a prefix, add the following to the source configuration for a data integration pipeline:

```yaml theme={"system"}
_patterns:
  destination_table: MY_PREFIX_{{ variables('stream') }}
```

For example, configuring a PostgreSQL source:

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  <img alt="Configure data integrations" src="https://mage-ai.github.io/assets/integration-prefix.png" />
</Frame>

### Environment variables

```
{{ env_var('environment_variable_name') }}
```

### Secrets

Use the following syntax to interpolate secrets:

```
{{ mage_secret_var('your_secret_name') }}
```

For more information on secrets, read the [documentation](/development/variables/secrets).