---
lang: en
title: 'API docs: sequelize.sequelizecrudrepository.db_specific_settings_keys'
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.sequelizecrudrepository.db_specific_settings_keys.html
---

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[Home](./index.md) &gt; [@loopback/sequelize](./sequelize.md) &gt; [SequelizeCrudRepository](./sequelize.sequelizecrudrepository.md) &gt; [DB\_SPECIFIC\_SETTINGS\_KEYS](./sequelize.sequelizecrudrepository.db_specific_settings_keys.md)

## SequelizeCrudRepository.DB\_SPECIFIC\_SETTINGS\_KEYS property

Object keys used in models for set database specific settings. Example: In model property definition one can use postgresql dataType as float `{ type: 'number', postgresql: { dataType: 'float', precision: 20, scale: 4, }, }`

This array of keys is used while building model definition for sequelize.

**Signature:**

```typescript
readonly DB_SPECIFIC_SETTINGS_KEYS: readonly ["postgresql", "mysql", "sqlite3"];
```