> For the complete documentation index, see [llms.txt](https://appmaster.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://appmaster.gitbook.io/docs/data-design/auto-generation-of-data-models.md).

# Auto-generation of data models

Some of the no-code features of the AppMaster.io platform, such as [plugging in modules](/docs/modules/module.md) and [making requests to external APIs](/docs/business-logic/block/external-api-requests.md), automatically create data models to simplify development. 

Some of them will be displayed in the data model designer, and some will be virtual - that is, you will not see them in the designer, but you can use them, for example, when setting up business processes. 

The automatically generated data models add their own blocks of business processes. However, these blocks may differ from the standard ones added by the custom models you create in the AppMaster.io Studio Data Designer. 

{% hint style="info" %}
Detailed information about a particular model can be found on its page in the [List of generated models section](/docs/data-design/auto-generation-of-data-models/list-of-generated-models.md).
{% endhint %}