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

# Adding Columns

> Columns define data types, and support validations and transformations.

You can add a column in two different ways:

1. Through [your Fuse account](https://fuse.flatirons.com/account/importers).
2. In code, using the `addColumn` function.

To add columns in code, see the documentation for a specific column type. See [String Column](/using-columns/string-columns/) for example.