Another method for developing a good understanding of what your data offers is to create a profile of the data, using the profile feature within IBM Watson Studio.
The profile of a data asset includes generated metadata and statistics about the textual content of the data so that you can see how it is made up. You can create a profile on the asset's Profile page in the project, as shown in the following screenshot:
Once you click on Create Profile, IBM Watson reviews the data and generates the visuals that you can scroll though and easily examine:
Depending upon the size and complexity of the data, generating the profile may take a few minutes. The good news is that after it is created, it is saved with the file so that it doesn't have to be generated again.