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docs/content/advanced/backend/entities/overview.md

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+# Entities
+
+In this document, you'll learn what Entities are in Medusa.
+
+## What are Entities?
+
+Entities in medusa represent tables in the database as classes. An example of this would be the `Order` entity which represents the `order` table in the database. Entities provide a uniform way of defining and interacting with data retrieved from the database.
+
+Aside from Medusa’s core entities, you can also create your own entities to use in your Medusa server. Custom entities must reside in the `src/models` directory of your Medusa server.
+
+Entities are TypeScript files and they are based on [Typeorm’s Entities](https://typeorm.io/entities) and use Typeorm decorators.
+
+## Base Entities
+
+All entities must extend either the `BaseEntity` or `SoftDeletableEntity` classes. The `BaseEntity` class holds common columns including the `id`, `created_at`, and `updated_at` columns.
+
+The `SoftDeletableEntity` class extends the `BaseEntity` class and adds another column `deleted_at`. If an entity can be soft deleted, meaning that a row in it can appear to the user as deleted but still be available in the database, it should extend `SoftDeletableEntity`.
+
+## What's Next :rocket:
+
+- Learn [how to create an entity](./index.md).
+- Check out Medusa's entities in the [Entities' reference](../../../references/entities/classes/Address.md).