When you delete a dataset, all cards that are based on it will also be deleted.
To delete a dataset:
Navigate to Analytics > Explorer > Datasets.
Locate the dataset to delete.
- Click the menu icon and then select Delete. A new window will pop out displaying cards that are based on this dataset.
Enter the title of the dataset in the text field, and click Save & Delete.
The dataset and the cards that are dependent on it are deleted.