@loopback/docs/site/apidocs/repository.applicationwithrepositories.datasource.md

Documentation for LoopBack 4

---
lang: en
title: 'API docs: repository.applicationwithrepositories.datasource'
keywords: LoopBack 4.0, LoopBack 4
sidebar: lb4_sidebar
permalink: /doc/en/lb4/apidocs.repository.applicationwithrepositories.datasource.html
---

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[Home](./index.md) &gt; [@loopback/repository](./repository.md) &gt; [ApplicationWithRepositories](./repository.applicationwithrepositories.md) &gt; [dataSource](./repository.applicationwithrepositories.datasource.md)

## ApplicationWithRepositories.dataSource() method

<b>Signature:</b>

```typescript
dataSource<D extends juggler.DataSource>(dataSource: Class<D> | D, name?: string): Binding<D>;
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  dataSource | <code>Class&lt;D&gt; &#124; D</code> |  |
|  name | <code>string</code> |  |

<b>Returns:</b>

`Binding<D>`