> 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/what-is-data-models.md).

# What are data models

**Data models** are descriptions of the information that you will add to your application. They can be compared to shapes or drawings: they determine how your data will look like, what other data will be associated with, how it is stored and processed.

## How it works 

By creating data models and setting up relationships between them, you d**esign your application's database**. After that, using other AppMaster Studio tools, you add functions to your application that allow you to populate these databases with information.

{% hint style="info" %}
AppMaster.io uses classic **relational databases** fully compatible with **PostgreSQL**.
{% endhint %}

## How to create data models

The [**Data Design**](https://studio.appmaster.io/db) is used to work with data models in AppMaster Studio. There, you will design your database the same way as regular programmers, only using visual programming tools.

## Automatic generation of data models 

Our no-code platform can also automatically create data models. Read more by the link below.

{% content-ref url="/pages/-Mk2XXcZyEbq55iQjXhl" %}
[Auto-generation of data models](/docs/data-design/auto-generation-of-data-models.md)
{% endcontent-ref %}

## Video

{% embed url="<https://youtu.be/ZxWd2Nj6Xeo>" %}


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