# String operations Back to: [Index of transforms](../cards-transform-table-index/index.md) Transforms in this section operate on a [string data type](../analysis-data-model/index.md). Learn more about [how to search for and add a transformation](../cards-transform-table/index.md#add-a-transformation). * [Substring](../card-substring/index.md) * [Lowercase](../card-to-lower-case/index.md) * [Uppercase](../card-to-upper-case/index.md) * [Concatenate](../card-concatenate/index.md) * [Find and replace](../card-find-and-replace/index.md)