Courtesy of Gordon P in the Dojo Community
"Each upload (Dataset execution) is stored individually.
Each time you upload, Domo adds the data to the already indexed (Processed) data and determines 1: does that row already exist (based on the primary key) or is it a new row.If it exists, it overwrites the previous value from a previous upload. if it doesn’t it adds a new row.If you need to change your schema, or remove any data, it would do a full re-index, where it starts back at your first upload, and indexes them 1 by one until it has rebuilt and determined the rows that should/should not exist in the dataset.TLDR: Domo keeps a historical record of rows updated on each execution and compares each upload with what it has established as current data to determine if a row should be replaced or a new row added"
https://domousergroup.slack.com/archives/C013AKYGP5W/p1670490550141159
