# Datasets

**Description**: Explains the concept of dataset objects in Valohai, and how they're used in experiments and pipelines.

Datasets are **immutable** collections of files.

You can **create new versions** of datasets, (optionally) based on previous ones, but **you cannot change** the existing ones.\
This offers full reproducibility, in the terms of the data used for training (or executions in general) - results produced by the execution in which datasets are used as a method of selecting the input files, will always yield the same results.

In this section you can learn how to:

* [Create and Manage Datasets](https://docs.valohai.com/data/datasets/creating-datasets)
* [Create new Versions](https://docs.valohai.com/data/datasets/update-datasets)
* [Package Datasets](https://docs.valohai.com/data/datasets/package-datasets)