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# Datasets
Manage reusable datasets
Datasets are a list of elements that can be reused in the application.
Suppose you need to create several select fields populated with a custom list of countries.
This task can be easily done with a dataset.
### Create a new dataset
Navigate to Tools > Dataset.
For example, you can create a new dataset called **countries**:
### Manage a dataset
You can manually add entries, or import a dataset from a file (allowed formats: **CSV, JSON, YAML**).
File examples:
{% file src="/files/s5Ipy2Q0RZJ293Hnwims" %}
{% file src="/files/1JfNKfVHBWpgMU0mWR6i" %}
{% file src="/files/WlIHCPrcAyrgtCzCAuFI" %}
### Use a dataset
Once the dataset is created, you can reuse it to populate a select field.
Locate your field, then click on **Load dataset** and select the previously created dataset:
The options are automatically populated:
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