---
lang: en
title: 'API docs: sequelize'
keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI
sidebar: lb4_sidebar
editurl: https://github.com/loopbackio/loopback-next/tree/master/extensions/sequelize
permalink: /doc/en/lb4/apidocs.sequelize.html
---

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[Home](./index.md) &gt; [@loopback/sequelize](./sequelize.md)

## sequelize package

[@loopback/sequelize](https://github.com/loopbackio/loopback-next/tree/master/extensions/sequelize)

## Classes

<table><thead><tr><th>

Class


</th><th>

Description


</th></tr></thead>
<tbody><tr><td markdown="1">

[LoopbackSequelizeComponent](./sequelize.loopbacksequelizecomponent.md)


</td><td markdown="1">


</td></tr>
<tr><td markdown="1">

[SequelizeCrudRepository](./sequelize.sequelizecrudrepository.md)


</td><td markdown="1">

Sequelize implementation of CRUD repository to be used with default loopback entities and SequelizeDataSource for SQL Databases


</td></tr>
<tr><td markdown="1">

[SequelizeDataSource](./sequelize.sequelizedatasource.md)


</td><td markdown="1">

Sequelize DataSource Class


</td></tr>
</tbody></table>

## Interfaces

<table><thead><tr><th>

Interface


</th><th>

Description


</th></tr></thead>
<tbody><tr><td markdown="1">

[LoopbackSequelizeComponentOptions](./sequelize.loopbacksequelizecomponentoptions.md)


</td><td markdown="1">

Interface defining the component's options object


</td></tr>
</tbody></table>

## Namespaces

<table><thead><tr><th>

Namespace


</th><th>

Description


</th></tr></thead>
<tbody><tr><td markdown="1">

[LoopbackSequelizeComponentBindings](./sequelize.loopbacksequelizecomponentbindings.md)


</td><td markdown="1">

Binding keys used by this component.


</td></tr>
</tbody></table>

## Variables

<table><thead><tr><th>

Variable


</th><th>

Description


</th></tr></thead>
<tbody><tr><td markdown="1">

[DEFAULT\_LOOPBACK\_SEQUELIZE\_OPTIONS](./sequelize.default_loopback_sequelize_options.md)


</td><td markdown="1">

Default options for the component


</td></tr>
</tbody></table>

## Type Aliases

<table><thead><tr><th>

Type Alias


</th><th>

Description


</th></tr></thead>
<tbody><tr><td markdown="1">

[SequelizeDataSourceConfig](./sequelize.sequelizedatasourceconfig.md)


</td><td markdown="1">


</td></tr>
</tbody></table>