Step #2 - Create a Dataset

From the Nexadata home screen, select Connect to a Dataset

Provide a unique Name for the data source

Select the Data Connection created in the previous step.

For the Data Format, see that the default format is Tabular.

When the option appears, choose Choose Existing File.
(Note that each Nexadata organization comes with some sample files.)

Choose the file "SIMPLE_FACT.txt".

When a file is selected, click Submit to complete the step of creating a Dataset.