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title: danog\MadelineProto\Db\DbPropertiesTrait: Include this trait and call DbPropertiesTrait::initDb to use MadelineProto's database backend for properties.
description: You will have to define a `$dbProperties` static array property, with a list of properties you want to store to a database.

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# `danog\MadelineProto\Db\DbPropertiesTrait`
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> Author: Daniil Gentili <daniil@daniil.it>  
  

Include this trait and call DbPropertiesTrait::initDb to use MadelineProto's database backend for properties.  

You will have to define a `$dbProperties` static array property, with a list of properties you want to store to a database.

#### See also: 
* [For a list of allowed property types](./DbPropertiesFactory.md)



## Properties
* `$dbProperties`: `array<string, DbPropertiesFactory::TYPE_*>` 
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