> For the complete documentation index, see [llms.txt](https://docs.fractalworks.io/joule/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.fractalworks.io/joule/developer-guides/builder-sdk/data-types.md).

# Data types

## Learn more about the key data types

{% content-ref url="/pages/S58RaVUpEqsh1Vqd9ycY" %}
[Key Joule data types](/joule/concepts/key-joule-data-types.md)
{% endcontent-ref %}

## Available data types

<table data-view="cards"><thead><tr><th></th><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><mark style="color:orange;"><strong>StreamEvent</strong></mark></td><td>StreamEvent enables flexible, efficient event-driven data processing in Joule</td><td></td><td><a href="/pages/s16kmef6jMqPHvX22Zup">/pages/s16kmef6jMqPHvX22Zup</a></td></tr><tr><td><mark style="color:orange;"><strong>ReferenceDataObject</strong></mark></td><td>ReferenceDataObject stores, queries, and manages contextual reference data</td><td></td><td><a href="/pages/fBCARp3hs0REBtAX9rzX">/pages/fBCARp3hs0REBtAX9rzX</a></td></tr><tr><td><mark style="color:orange;"><strong>GeoNode</strong></mark></td><td>Geospatial data structure for location-based spatial entity analysis</td><td></td><td><a href="/pages/GymvAThMWK8Y0DDGGnQc">/pages/GymvAThMWK8Y0DDGGnQc</a></td></tr></tbody></table>