> ## Documentation Index
> Fetch the complete documentation index at: https://docs.xano.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Logic

> The business logic that executes when called

The logic is where all of the actual steps that execute when called live; what happens when it's executed. Your logic can be comprised of any combination of:

**Functions**

* Functions are individual pieces of logic, like getting a record from the database, or generating a random number.

To review all of the available functions, see the [Functions Reference](/the-function-stack/functions).

**Filters**

* Filters are applied 'inline' to other values, and are used to transform or manipulate data, such as trimming whitespace or converting to uppercase.

To review all of the available filters, see the [Filters Reference](/the-function-stack/filters).