> For the complete documentation index, see [llms.txt](https://docs.heisenware.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.heisenware.com/~/changes/Q625pQNc0nXqVGPtyjAY/building-apps/data-processing.md).

# Data processing

Get to know building blocks and other data processing features.

There are almost no limits for apps built with Heisenware. This is an overview of the most important building blocks for data processing: 

* [Functions](/~/changes/Q625pQNc0nXqVGPtyjAY/building-apps/data-processing/functions.md):  To create the backend, instead of programming, you configure functions and establish links between them. Each function is designed to perform a specific action using input arguments and provides an output result for further processing. Functions can be triggered by events. 
* [Function extensions](/~/changes/Q625pQNc0nXqVGPtyjAY/building-apps/data-processing/function-extensions.md) are useful tools to transform, record or filter function output on the fly.
* Code: To enable tailored data processing, the App Builder allows JavaScript and JSONata usage as part of a function extension called modifier. 
* [Objects](/~/changes/Q625pQNc0nXqVGPtyjAY/building-apps/data-processing/objects-and-instances.md), also referred to as instances, can perform a specific range of actions and provide context to those actions by containing data. The actions an object can perform are represented by object functions. 
* [Utilities](/~/changes/Q625pQNc0nXqVGPtyjAY/building-apps/data-processing/utilities.md): Specific functions and objects to build custom data processing logic.


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