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docs: general fixes and overall changes (#7258)

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Shahed Nasser
2024-05-07 18:00:28 +02:00
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www/apps/book/app/advanced-development/modules/connection-loader/page.mdx
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In this document, you’ll learn about how to load the database connection in your module.
## Modules Database Connection
By default, a module will use the same database connection of the Medusa application.
To access those database credentials and ensure that MikroORM’s [entity](https://mikro-orm.io/docs/entity-manager) and [transaction](https://mikro-orm.io/docs/transactions) managers use those credentials when performing database operations, you must pass a database connection loader in your module’s definition.
Medusa provides a utility connection loader factory that handles registering the database options and entity and transaction managers into the module’s container.
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## How to Add a Database Connection Loader?
In your module’s definition file, import the `ModulesSdkUtils` utility function from `@medusajs/utils`. Then, use its `mikroOrmConnectionLoaderFactory` function to create a connection loader and export it in the module’s definition.
To ensure that your module's database operations use the Medusa application's database connection, export a database connection loader in your module's definition.
Medusa provides a utility function that creates the database connection loader for you.
For example: