> For the complete documentation index, see [llms.txt](https://docs.appfarm.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.appfarm.io/appcademy/appfarm-fundamentals/app-data-fundamentals.md).

# App Data Fundamentals

This Module covers some important features of Data Sources and other App Data.

This Module is relevant for everyone who has taken the [Intro Course](/appcademy/appfarm-fundamentals/intro-course.md) and wants to take their learning a bit further with regard to App Data.

### Topics in this Module

{% content-ref url="/pages/XlF2Q3dHMdjb5VAN6vvI" %}
[Data Source Filtering](/appcademy/appfarm-fundamentals/app-data-fundamentals/data-source-filtering.md)
{% endcontent-ref %}

{% content-ref url="/pages/HYiunjcxXtjunQdnhGia" %}
[App Variables and Runtime Properties](/appcademy/appfarm-fundamentals/app-data-fundamentals/app-variables-and-runtime-properties.md)
{% endcontent-ref %}

{% content-ref url="/pages/uIBL5yDDvdWBCLwy1XXI" %}
[URL Parameters](/appcademy/appfarm-fundamentals/app-data-fundamentals/url-parameters.md)
{% endcontent-ref %}


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