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Data Distiller exploration for AJO

Hi,

I am looking into the Adobe Data Distiller Guide (Adobe Data Distiller Guide | Adobe Data Distiller Guide), and I am trying to follow along with the exploration section for AJO, here: EXPLORE 300: Exploring Adobe Journey Optimizer System Datasets with Data Distiller | Adobe Data Dist...

When I run the query in the attachment I get 0 rows.

SELECT 
   table_name, 
   column_name, 
   data_type 
FROM 
   information_schema.columns
where table_name = 'ajo_entity_dataset';

The sandbox is new, and we have no journey defined yet. However, as the dataset seems to exist, I am expecting to see at least the metadata in information_schema.columns. But I get nothing. Question is: is this a matter of permissions, or it is because there is no journey yet? I can see the columns in information_schema.columns for other datasets, but not for the AJO ones.